Review They Changed my Original Tires

What do I do? Who do I turn to for help?. I had my Trailblazer dents repaired at Chevrolet Pasig this May through my insurance (MV********). The repair took 7 days to finish. Last May 24 it was released but I was requested by Mr. Willy Villarosa of Juno Cars Inc. to bring the vehicle back because of incomplete and unsatisfactory work on the rear door panel. When I brought the Trailblazer home I noticed that THEY HAVE REPLACED MY TIRES to old ones. I bought my Trailblazer from Chevrolet Pasig owned by Juno Cars Inc.. My Trailblazer is only 2 1/2 years old. I have two other cars which I use often and the Trailblazer's mileage is only 32,000 kilometers. My original tires are still thick and I know this because I clean them personally almost twice a week. The tires that they replaced them with are old and almost worn out. MY ORIGINAL TIRES ARE NOT WORN OUT. We don't travel that much! Please, I beg you to investigate this matter promptly. This may be happening under your noses for a long time now.