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.
TLDR : Answer Summary
The author recently renewed their Non-Immigrant O visa for the second year but initially received the wrong bank statement. After visiting a local bank, they discovered they could quickly request a 12-month statement through the bank's mobile app, which helped with the visa renewal process. Other commenters shared their experiences regarding obtaining bank statements from Bangkok Bank and other banks, highlighting variations in policy and efficiency based on location.