A couple of days ago I renewed my Non-Imm O for the 2nd year. I got a letter from the bank, however, it was the one for when first applying. I needed a statement for the previous 12 months. Being told by the Imm officer I would need to go to the main Bangkok Bank in Silom and apply, I thought, Oh no!. Instead I went to the bank downstairs in CW and spoke with them. I was informed by a very helpful staff, I could submit a request on my phone App and get it sent to me in 5 minutes. Print it, get it stamped by the bank. Problem solved. I told the Imm. Officer. Who then told others. Hope this helps others.