The customer claims my work had to be redone...I know for a fact that they're lying. I did the cabinets, and have been in contact with the countertop guy. They didn't remove anything and are putting finish on it now. They got 33k in extras before terminating me. No lawyer will take on the case so I've been having to deal with their attorney directly and he is making threats. Can someone tell me if I should just walk away? Is a frivolous lawsuit something I can defend against?