last year a few customers from another service appoached me about taking over for the rest of the season and this season, i agreed to look at their lawns and bidded on them, i knew the other contrator, but always considered him to be a a$$hole (for another reason) and he does a poor job, scalping the lawn, not trimming everything, ect. ect., on all the lawns i took them over at the same price. and finished out the season, its the 3rd week of cutting here and still this guy is trying to convice them to take him back and they keep saying no, he did this all winter and now afew times in the spring, should i make him pay for this or let it go. what should i do, go to war with him or tell him to back off??????