Jenison Custom Builders

I hired them to come to our house to fix our leaking garage roof. They estimated it would take 20 hours 2 men for $1800.00. I paid them $1000,00 up front and to pay the rest after completion. It took 1 guy 10 hours to do the work, then I got the invoice for the rest of the bill. I called and spoke to Justin that it took 1/2 the hours and 1/2 the men that was billed. He said well just pay me $250.00 more and we are done. In the mean time, we have noticed the roof still leaks, so I called Justin again. He is upset that I "cheated" him out of the rest of his money that he said if he comes back out I will have to pay him the rest of the money and anything else I would owe to fix it right. The way I see it is he thinks I cheated him, but I see I am out $1250,00 and still have the same leaky roof I started out with. Now I will either do it myself, or hire someone else. Either way, I will not have them back out for anything.