Tires Plus Doesn't warranty parts with internal failure after 6 months Sunrise Florida

I went to this Tires Plus store numerous times in the past for oil changes so when I needed my rack and pinion replaced I told them to go ahead and do it. Little did I know that 4 years later and 5 replacements on my rack and pinion I would be still dealing with the issue. Here I am again needing it replaced due to internal failure on the part and and they now are refusing to replace it because I am just outside of the warranty by a little over a month. I have worked in the automotive industry before for years and I have never seen such crappy Customer Service. I am disgusted on how they treat people who pay them for services.