@Robert ******
Do you have any links to where it says that 500k thb for free months is a requirement? Official site says this: Financial evidence: an amount of no less than 500,000 THB, (e.g., bank statements for the last three months, sponsor letter). The requirement is providing the bank statement for the past 3 months possibly to check there has not been a sudden transfer, but it doesn't mention that the sum must be there for the whole period