My stupid Tae Kwon Do problem...?

TKD actually isn't useless at all. Have you ever taken a round house to your kidney? not fun. But it certainly sounds like you've been visiting a "McDojo" or a fake dojo that is only out to turn a profit. This is why they wanted you back, for your money. Therefore i say that dojang can go to hell and you should quit. If you like wrestling, do that.