Discount Tire Failed to honor warranty Surprise Arizona

I have been going to discount tires for 15 years for all of my tire needs.  I have always purchased the tire warranty even though I have never used them.  I had never had a problem with them until this became an issue.

So my tires were riding funny and I brought my car in.  I take it in and speak with a sales Rep, Henry.  Henry said the tires were shredded and I needed to purchase new tires.  I told Henry that I had about 30k miles left on my warranty, and he informed me that I had over 50k miles on my warranty.  Great I thought, but it wasn't.  Henry proceed to tell me he will take $75 dollars off of my new tire purchase because it is my fault the tires are bad. 

We argue for a while and he goes and gets his manager, Jow.  Jow says the $75 off is a great deal and that I should be happy and take it and I'd be an idiot not to take it.  At this point I'm getting extremely irritated and can't believe the way I'm being treated after 15 years of being a client.  Henry tells me he can sell me a cheaper tire and still take the $75 dollars off but that it will still be over $200 dollars.  Needless to say I decided I did not want to do business with them anymore and left.  I highly recommend you don't go here, their customer service reps are jerks and they don't honor their agreements.