that's what I mentioned that it depend upon bank branches... I tried many branches in Bangkok, even one of the employee at chaengwattana immigration told me to check bank branches in building of immigration and I visited but no luck. Then one lady give me address of headquarter and when I reached to headquarter, they opened my bank account within 2 hours. This is about Bangkok but other cities, I don't know.
I can understand, everyone has a different situation. If you are married and have tourist visa, then open bank account in other branches even in tourist areas... About language, when you spent time in Thailand then you will learn thai but when you are just new and come to Thailand, u can't talk in thai on first day.
other places, it's hard to open and mostly the staff can't speak English. In headquarter, all the staff can speak English. I tried so hard and visted around more than 20 branches but all of them know nothing. At the end, I have to go headquarter and they opened...