Bring your partner along for the address. I’ve always done that and never had any issues. And I bet 90% of all expats do the same. If not, just have a (hand written) letter with a copy of the Thai id and tabien ban. That must be enough.
I have read many and I know personally 5 on retirement extension whose accounts have been locked until they went to the bank and got it unlocked without any extras. Most residents learned about the phone problem long ago. 😉
My guess: too many scammers opening accounts for Indian/Chinese call centers, so they must make sure you are legit.