All Star Auto

I bought a 2008 Mazda CX7 from All Star Auto on December 6th. I had the car 2 days before I began having problems with it. I contacted All Star and brought the car back in. They kept the car until December 10th to repair it. I picked the car up on December 10th and had it one day before I had to turn around and bring it right back. They then had the car until December 23rd. I picked the car up and had the car until December 26th when I had more problems with it. I brought the car back in and they had it until January 15th when I picked the car up. The car then died on the side of the road on January 20th. They had it towed to their mechanic where it stayed until they told me it was fixed and I picked it up on January 27th. Today, February 15th the vehicle caught fire while stopped at a stoplight. It is now not fixable. I was informed today that the car had a new motor put in it which was never disclosed to me.