Rockstar Concrete

Rockstar completed work at my place for $6000 in from and in the back late summer 2015, he built a relationship with us, we trusted him. In 2015 when the work was completed he came to put the protection on the concrete and was supposed to come again for a second layer. I tried to contact him this year and never answer me back. Never came for the second time and also there is a crack in the back. He doesn't reply to my emails or phone calls. I am still trying and give them the benefit of the doubt but if I don't hear about him, I will come back to complete more reviews.