Specially if you can show a bank letter. That letter says that the money came from outside and how long it’s in the account. If not then let the bank write it again.
Or… is it possible that you took out too much during the year so that it was below 400k or not 800k 2 months before the date?
I had a reminder for the extension 5 days ahead. Went there and the officer said I had not done the 90 days, pointed to the paper at the end of my passport and said 17 days, 8500 baht. After that he asked me the remaining papers.
And I don’t wonder. It was the boss of the office. After I didn’t send 65k every month but sometimes more sometimes less, he said he could manage the 800k, he could do that for me for 25k.
About 2 years ago I totally forgot about the 90 days and had only a reminder for the extension. When I went there the officer counted 17 days and asked for 8500. (I got a receipt for only 1900 now that I looked in my papers, yes).