No,it's not wrong.Maybe you don't read info from your bank/s. One reason for closing an account is "fraudulent or illegal activities". Thats what actually started the suspension mess at Bangkok Bank.There were loads of pre-registered sim-cards which is not alliwed.Then there's mismatched names,and not updated passport numbers when renewing passports. KBank about a month ago warned account holders that if they didn't update their personal info before a certain date,their accounts would be suspended and in the worst case closed. This morning I received an email from Bangkok Bank with a pdf-file showing the latest T&C's,which included official terms regarding phone-numbers.They are updating T&C like 2-3 times a year. Boring as hell to read. I just scroll down to the most important parts,then I delete the email.
This I how it's supposed to work if the hotel where you were staying reported you to immigration. If they ask for your passport during check-in, they are usually taking a copy for the TM30.
Garrett Greenwald That's not correct. It affects your bank account. If your phone number isn't registered in your name, your bank can actually close the account. That's the worst case scenario.
Every 30 days extension based on an initial 60 days visa exempt is added to your admitted until date. It never starts the day you applied for it at immigration.