They use bait and switch tactics to get you to call them to schedule an appointment, having items listed as 'In-Stock' on their website and when you call they instantly know that the cheap product is out of stock without checking their computer.
When you are actually there getting service they use extortion to get you to buy more. They told my girlfriend they would call the police on her for driving an unsafe vehicle unless she got all the repairs they recommended. This turned a $150 dollar repair into a $400+ repair and screwed us over financially.
All my recent experiences with Sears / K-mart have been terrible, they hound you for personal information and constantly attempt to up sell you products and services you don't want. I will NEVER shop at a Sears brand store again.