I have called him back. Said he was going to come out on a Monday so I left work early to meet him. He never showed and apologized 2 weeks later when I emailed and asked. He said he would come out 3 days later. Still havent heard anything and it's been a week since then. I'm annoyed because I asked if I should prep it with sand before he poured. He said it would be fine and I didnt need to. I cant help but think that would have kept it from cracking. There are joints in it, but one of the cracks goes right across it, another is at a corner and the other is a really long crack where there is a patio area.