rusty Eck Ford Tires for Life is bogus Wichita Kansas

Don't sign up for tires for life at Rusty Eck Ford, it's bullshit. No where in my contract with Rusty Eck did it specify any rules or regulations for tires for life. I had my car service by them for 8 years and 1 set of tires replaced. This year I needed a new set so I contacted them to schedule an appointment to have new tires and told them I had "tires for life". The lady laughed and said very few people still have that. I told her I did. She then informed me because I did not have my radiator flushed and other engine work done that my contract was null and void. What does engine work and flusing have to do with tires?  Again, no where in my contract was this noted. They are rude and I will never do business with them again. Buyers beware!!!!