Bad workmanship

His name is Wayne Williams, he has his own construction company, but doesn't do a proper job. He "fixed our roof" for leaks, with new sheeting. But the roof is still leaking, even after we paid him for his services, he has failed 2 fix his mishap. After numerous calls 2 him, he came out on 1 occasion, said he would be back and never bothered to come back. We want 2 warn other people not 2 fall 4 his utter lack of professionalism. This was in September of last year and he is still coming to fix his mishap.