well, its to put myself in your shoes , but I have had some of the same experiences , I had to make a hard choice, I gave up 80 -100 calls a month because of non payment of a lot of po's they refused to pay for the po's that were completed and dispatched for. I refused further po's , they keep calling and sometimes I get the call and credit card, and sometimes I don't it was hard choice put my head into the work and found different sorces for revenue. just don't tow haul equiptment, freight, scrap cars, move sheds. don't lose any money any more ,still do motor clubs but on my terms , but everybody get excellent severice from me. I work harder sometimes for my money.