The Calls That Will Bite You

Family is the easy case. Anyone close to you will eventually move to WhatsApp, FaceTime, or Signal. They figure it out.

The calls that quietly hurt are from the institutions that only dial your registered phone number on file, and that often dial without warning:

  • Your bank's fraud team, when a card-not-present transaction looks suspicious
  • Your GP's surgery, calling back about a referral or a test result
  • Your tax office, with a question about your filing
  • Your old employer's pension administrator
  • A utility company about your final bill three months after you've left
  • A government agency asking for clarification on an immigration or social-services file
  • A solicitor handling something you'd filed and forgotten about

These callers will not switch to an app. They will not email instead. They will dial the number on file once, sometimes leave a voicemail you may or may not be able to access, and otherwise move on with their day. If you miss the call, the consequence ranges from "minor inconvenience" to "your bank account is frozen until you call us back during business hours, and we don't accept international callbacks".

This guide is about ensuring those specific calls reach you, while you're sitting in a different country.

Step 1: Audit Which Numbers Each Institution Has

Block out 30 minutes and go through every important institution. For each, find out which phone number they have on file. You're looking for:

  • Bank (current account, savings, credit cards, mortgage, brokerage)
  • Healthcare (GP, dentist, hospital, any specialist)
  • Tax/revenue agency
  • Pension provider(s)
  • Old employer(s) HR
  • Insurance (home, life, health, motor)
  • Government services (DWP/Social Security, immigration, DVLA equivalent, electoral roll)
  • Solicitor, accountant, financial adviser
  • Utilities still in your name
  • Schools/universities your children attend or have attended
  • Subscriptions that require phone verification (very few, but check)

Most of these are reachable through online portals where you can see the registered phone number. The audit usually reveals one or two surprises — for example, an old number on a forgotten brokerage account that's now your father-in-law's mobile, because that's whose phone you used to verify in 2014.

Step 2: Decide on the Number You'll Give Them All

Don't update each institution to a different number. Pick one new number, give it to all of them, and you'll know exactly where to look when the phone rings.

For an expat, the right pick is a virtual local number in your home country. Banks and government agencies are comfortable calling local numbers — many have explicit policies against calling international numbers even when they're on file, because of cost and fraud detection rules.

A service like Voxa lets you buy a local number in the UK, Germany, France, Spain, the US, Canada, Australia, and 40+ others. Once you have the number, it's the one address every important institution back home should dial. The caller experience on their side is identical to dialling any other local number. The cost on your side is the monthly rental plus what you choose for routing — €0/minute if you receive the call in the Voxa web app, or the standard outbound per-minute rate if you forward to a phone number wherever you actually are.

Step 3: Update Each Institution

This part is annoying but it pays off forever after.

For most banks and brokerages, the phone number update is a setting in the online portal. It takes 30 seconds per account. A few will require a verification step — usually a call to the old number on file or an SMS to it. Do this before you've cancelled your home SIM, so you can still receive the verification.

For government agencies, it depends on the country. In the UK, HMRC and DWP both accept phone-number updates in their online accounts. In Germany, the Finanzamt may require a written form. In France, most are online. Plan for one or two of these to require paper or a face-to-face visit on your next trip home.

For healthcare, your GP surgery will update the number when you call them once. Same with old employers.

Step 4: Set Up the Routing

Now that the new number is everywhere it needs to be, configure how you actually receive the call when one comes in. Three choices:

  1. Receive in the Voxa web app on your phone or laptop. No per-minute charge. The simplest and cheapest option. The app rings when a call comes in, the same as any other phone app. Audio is HD.
  2. Forward to your foreign mobile (the local SIM in the country where you live). The call comes in on your normal phone interface as if it were a local call. This costs the standard outbound per-minute rate to that destination — e.g. €0.02–€0.05/min to most European mobile destinations, €0.02/min to a US mobile.
  3. Forward to a foreign landline. Same model, landline rates are typically lower than mobile rates.

Most expats configure option 1 as the primary and option 2 as a fallback for "if the call is not answered in the app, send it to my Spanish mobile". This way important inbound calls have two chances to reach you.

Step 5: Handle the SMS Edge Cases

A few institutions — particularly banks — still rely on SMS for 2FA codes when you log in or transfer money. Voxa's primary inbound product is voice, so before depending entirely on the virtual number, you need to ensure these institutions have a non-SMS 2FA path:

  • App-based 2FA through the bank's own mobile app — almost always available, often the default in 2026
  • Voice 2FA — most major banks now offer the option to have the code read aloud over a phone call. This works perfectly with a Voxa virtual number.
  • Hardware token or authenticator app — TOTP-based codes from Google Authenticator, 1Password, Aegis, etc. — these don't depend on phone networks at all and are the most robust option for expats.

Switch each bank to one of these before cancelling your old SIM. The switch usually takes a few minutes per account.

Step 6: A Few Specific Scenarios

Bank fraud team calls

These are usually outbound calls from a known bank number, asking you to confirm a transaction. With the virtual number set up, the call rings in the Voxa web app on your phone. You answer like any other phone call, confirm or deny the transaction, and you're done. The bank does not care which country you're in; they care that they reached the number on file.

GP or specialist call-backs

These tend to be from withheld or unrecognised numbers. The Voxa web app will ring as normal, audio is the same as any phone call. Take the call wherever you happen to be. The caller has no idea you're outside the country, and there's no need to mention it.

Government agency calls

Less common as an outbound, but happens. Same handling — the call rings on your virtual number, you answer in the app or on your forwarded phone. Some agencies will leave voicemail; Voxa's voicemail-to-email forwarding gives you the recording in your inbox.

Tax-residency complications

Worth flagging — if you're maintaining a home-country phone number and address while being tax-resident elsewhere, ensure your residency status with each institution is accurate. The phone number itself doesn't imply residency, but inconsistencies between your declared address and the country your number suggests can occasionally trigger a verification call. Not a problem, just something to be aware of.

The Quiet Win

After a few months on this setup, you stop thinking about it. The bank calls, you answer in the app, you handle the thing, you hang up. The GP calls back about a test result, same. A government letter would have triggered a follow-up call, that call arrives, you take it.

The institutional callers in your life never know you've moved. They keep dialling the number they always dialled. You happen to be 1,500 miles from where the number lives. The roaming network is no longer in the picture.

That is the entire goal.