See an agent. They will deal with it. As you do have the full amount on a Thai bank they will deal with it. It will cost you a fee for them... but that will be far less than starting all over again. Heard this issue many times before from others who had no difficulties at all this way.
ahh.... just go to an agent.. try TVC here in this group. They have good and real reviews. Save your money. The TEV is fine but if you cannot pay there and then ... you are right.... they don't give a dam.