I can speak, read and write Thai. It was a letter they typed for me, not a standard document. I am very aware of the other document since I bought a car and have a driver's license. I recently opened another account at TMB - already having a non-o visa.
no, it was not a residence certificate , it was a letter saying : please open a bank account. First the bank did not want to open a bank account too. So, I went to immigration, explained my problem, and they wrote this letter. I think there was a service fee of 800B.