Pyramid hardwood flooring

If I could give zero stars, I would. An absolutely horrible experience working with this company and it's people. Our project started in June for a hardwood/tile/staining install, quoted to be complete in 1 week. Our first clue should have been when he said he typically doesn't do tile, but would do ours. We moved forward because of the cheap price and the promise of "6 months down the road, 1 year down the road, if there are problems, let me know and I'll take care of it". Installation took 2 weeks. Then the problems start: 1, Our existing hardwood stairs were to be stained to match the new hardwood. Horrible quality. You could see sandpaper marks and uneven staining on the steps. The one positive is that his sub-contractor re-stained them and took the final cost off our bill. 2, Two weeks after the tile is installed, one of the tiles (12x24) cracked due to an unlevel underlay installation of the subfloor (if you set a level on the specific tile that cracked, you can fit a quarter under it), and the are other tiles that are 1/4" higher. The tiles are not flat and level. He says it is due to our material, and not the underlay, and wants $300 to come replace the tile, but not fix the underlay. Started trying to reach out to him right away and finally got a response in November. NOVEMBER! We now have 4 total tiles that are cracked and he still wants to blame the material. Refuses to give us a refund or fix the shoddy workmanship. 3, We paid for a wooden register vent to be flush with the hardwood floor. He claims that we did not pay and he will now not supply us with it. When I ask him about all these things he keeps blaming the quality of the material and then starts the name calling. Is that really how you treat your customers? I guess the saying is true that you get what you pay for. We went the cheapest route (out of 4 bids), and we got the cheapest result. We will have to hire someone else to re-do the "work" that was done.