in theory, immigration rules are meant to permit a mixture of income and deposit, but Chiang Mai for one will only permit either 65k for 12 months or 800k and never the twain shall meet
The bank statement should specify that it's an international transfer. You'll need your bankbook, a copy of your bank book, the last 12 months' statements and a letter detailing the foreign transactions...this is what the BKK bank letter looks like
I believe that people are conflating two different events happening at a similar time, the Chinese scammers and mobile security confirmation which WILL result in non verified accounts being closed...