Preferred Auto Repair at Bel Air

The worst expirence ever. One of the tires he put looked different and got flat next day. There was a nail in it after driving 5 miles - unlucky or the nail was in it from the beginning. Plus has a white line above the white letters. Mine other 3 tires have white letters but not line. When I got back there he said it's from hitting the curb. Is it possible to hit the tire and not the letters which are thicker, and by that paint the perfect circle around the letters? The man is really rude. Do not go there