This is due to your SSA deposit. BKK bank will only allow you to withdraw personally at the bank.
Change your DD to your USA bank and then use WISE to send funds to Thailand.
You will also get a better exchange rate wit Wise.
I have never had my US CC refused. When I do use it, they always ask if I want to be charged in Baht or US $$. I always say Baht as you get a much better exchange rate. My wife, always uses my US card and has never had an issue.
I just tried the first number and it worked for me.. Yes, the recording does ask you use the online help but if you are within normal business hours you get the message to press 1 for live help.
I run 2 12,000 BTU Inverters every night and my cill averages 3200B. This month I'm running a 25,000 BTU in my living area from 6am to 10pm. I'm expecting a 5000B bill.