AutoNation Chevrolet Gilbert

Went into AutoNation Chevrolet for a routine oil change service appointment. While my appointment was at 7am, did not talk to a service advisor until after 730. Told the service advisor that I had a nail in the driver side front tire which I wanted to get fixed in addition to my scheduled oil change. Waited for service to be done and when reviewing work done, did not see anything about fixing the tire. The service advisor said the tech found no nails in any tire. I told him I had personally seen the nail, so please take it back and fix it while I was there. After 30plus more minutes he came back to me and said the tech could not find anything. So I asked for my keys and left. Today I am having to make a separate trip to discount tire to plug the leak and nail which I can still see. I will not be going back to AutoNation Chevy as how can I trust their techs to actually fix a complicated problem when they can't even find a nail in a tire.