Our pool is 25 - 30 years old, fiberglass, and still looks and works like new !

Older guy came out to my house to do warranty work from another company for my salt generator. It was ALL completely covered under warranty by the generator company, but he keeps sending me a bill for the labor as he claims WE damaged the part, that was defective once before. He even admitted the guy who came before him put the salt cell in upside down so it wasn't working, so who's to say he didn't jam this delicate part in and broke the prongs on it. He says I claim we did it which is an outright lie. Also he seemed clueless. Do not recommend.