Dubbins Discountroofing

I hired Stephen Dubbin after he completed a roof project across the street back in early December. He seemed to be tidy when he worked. He checked my flat roof as I knew in the next couple of years it would requiring replacing (10 years old). He said it needed full replacing and charged me $3600. Three weeks later we had a snow fall, and we had a major leak in our house where multiple areas leaked which caused $2000 damage room. I have attempted 8 times to contact Stephen on both his mobile and business number in the last three weeks and still have not heard back.
I had three quotes for my roof from other roofers to repair. All three roofers stated that who ever did my roof was not a qualified roofer as nothing was sealed properly and it would have to be fully replaced again. Since I have had to pay another $6000 to have a qualified roofer replace my roof, plus I still have the $2000 of interior damage. No happy...