NHTSA Complaint #11559619 — 2013 MINI COOPER

I purchased a used car from Carvana. It had brand new tires on the car when I took possession of it. The make and model of my car comes standard with run-flat tires because my car does not have a spare tire. Before Carvana sold the car they replaced the tires with non run-flat tires but did not inform me of this. One year after I took possession of the car, I had a flat tire and was stranded on the side of a busy highway for hours because I had no spare and the tires Carvana put on the car were not run flat tires. I think Carvana put my safety at risk just to save a few bucks. I have contacted them multiple times and they won't help me. I think they should replace the tires on my car with run flat tires since I'm still driving an unsafe car. They knew the car comes standard with run flats and they knowingly replaced the tires with non run flats. Can you help me?