I Do That Handyman Remodel

Beware of this guy!
Hi, Sheldon Hamper (the owner of I Do That) cracked our kitchen drain pipe by allowing the 12″ furnace ducting that he installed to rest on it. I just had a plumber install that pipe at a cost of $ 135.00.
All he had to do was put one or two duct straps on it so that it was attached to the beam instead of putting pressure (weight) on the plumbing pipe.
He had no support at all on the 12 inch ducting for the first 4 ½ feet except for the plumbing pipe that it was resting on. He properly supported the last 12 and a half feet of the 12 inch ducting with four separate straps including one at the opposite end of the plumbing pipe that he cracked.
He also cut into our water line for the refrigerator and then tried to hide it by duct taping it and wrapping (hiding) it in a rag. My daughter noticed that the cold water spout on our refrigerator wasn’t working which led to discovery of the problem. I paid him for the work that he had done so far since I didn’t know about the problems yet.
He did the work on a Thursday and he was suppose come out and finish the rest (for more money) on Monday but I canceled since I didn’t know if I could trust him to do a proper job any more. I am in a tough position since I need to have the damage that he did repaired and I have to have the rest of the job finished whether I do it myself or have someone else do it.
My son emailed him about the problems and Sheldon admitted cutting the refrigerator line but he denies cracking the plumbing pipe even though we sent him pictures of the 12 inch ducting resting on the plumbing pipe.
I filed complaints with the BBB and Angies list.