I came to GMC on July 22nd 2015 for an oil change ...

I came to GMC on July 22nd 2015 for an oil change and tire rotation. I came in at 10am to drop my truck off. Ian helped me out at the service department. When I dropped my truck off Ian told me that it would take one hour and thirty minutes to two hours. I had a friend pick me up and take me home. The time goes by still have not heard back from Ian. At 2:30pm I called the service department to see if my truck was being serviced. After being on hold for 10-15 minutes the person on the phone told me that my truck "has not even been looked at and that it should take another hour or so". So I finally get a phone call from Ian at 5pm stating that my truck was finished being serviced. When I finally get my truck seven hours after I dropped it off for a simple oil change and tire rotation I noticed that they did not even put air in the tires and all of them were low. This service was terrible, Ian did not even apologize for the inconvenience for me having to wait seven hours for my truck.