I’ve disabled calls on iOS and it failed like twice in two years. Once it was a doctor appointment, and I’ve now learned to use their system to do online calls

I’ve disabled calls on iOS and it failed like twice in two years. Once it was a doctor appointment, and I’ve now learned to use their system to do online calls instead. The second time it was some insurance claim, which forced them to give up and send me an email after calling me a number of times. I’d say at this point let the system fail if they don’t have email or whatsapp or something else they can use to reach you.