You need ฿800,000 baht maintained in a Thai bank for a year, and if you deposit ฿65,000 over that year you can withdraw the ฿800,000 and use the ฿65,000 for living expenses. No need to keep a specified amount in your account.
Don’t forget to head over to the airport Thai Customs desk before trying to catch your flight. You’ll have to pay for your overstay before they’ll let you go.
I enjoyed my week in Kuala Lumpur. English is spoke amongst a large segment of the population if you want to carry on interesting conversations without wondering if someone actually understands what you’re saying.