It's not a question of moving your account. If you want a local account then you have to start all over again and its completely at the discretion of the branch you choose. Keep trying though as I had to apply 4 times at the same branch of BB before I got someone to say yes.
I never have my 90 day report rejected on line now. I always do tm30 registration directly before 90 day so the addresses are sure to match. If the addresses do not match then your 90 day report will be rejected. The system us working much better than it used to.
I live in rural Issan and the electric goes off occasionally fir no longer than half hour. The water has not been off for months. The UK, on the other hand, people in Wales have been without electric for three days after a storm!
My Krungsri account is in Sakhon Nakhon but I have no problems getting the documents required from the branch in Nakhon Phanom. I beleive Bangkok bank makes it a bit more complicated.