Minute Muffler and Brake

i had two front wheel-bearings installed at minute muffler last fall. 300 kilometers later the grinding is back. an inspection revealed the wheel bearings were at fault. the spacers for the bearings were crushed up. thinking they must be defective i bought more to try again. this time the "tecs" at minute muffler snapped my hub. no attempt to even apologize was made . damage was obvious incompetence. im out 2 75$ bearings and a 350$ wheel hub, 130$ charged to smash in the bearings the first time , and 3 hours shop time getting the hubs taken off. in all over a 1000$ and i still have a grinding wheel bearing. don't take your business there. they are crooked untrained hacks. some other place twice as expensive is a better deal.