Remitly. I transfer from the US to Thai bank for .99 cents not sure cost over 500$ USD. Fast and efficient. Shows all transactions ever made. As soon as my account clears it is immediately sent and available to recipients account and ATM no matter time of day.
so sorry, but if you have a legitimate Thai wife and child you should be very familiar with the correct procedures and how to access the official information. Do your research. This is a start, but can be deceiving and confusing.