Lennar Builders review: Tile is raising off the floor and cracking.

I put a work order in 5 months ago my home was still under warranty the floor tile that is raising up and cracking badly I have been calling customer service every week for all these months and they keep giving me one excuse after another why they have not come to replace it. they are not able to match the tile now since they don't have any of the original lot. This is so frustrating it is in a busy are by the kitchen counter.