I had bought a John Deere mower from Lowes in east Knoxville (TN). Not even a year later I had to take it in for service for a racing throttle.
As I had bought the extended warranty I would have expected a smooth ride, instead they give me the run around for about an hour before I call corporate and they tell them to take it in for service. Two weeks later they finally send it out for repair (after I had called the third party repair shop and THEY told Lowes they were picking it up). I then find out that there's a bent crank shaft and a broken blade (neither of which were there before) - oh and none of it is covered by the warranty policy.
All Lowes had to say was when are you coming to pick it up. I spend probably 15-20K a year at Lowes, hope Home Depot likes my money better
Monetary Loss: $500.