If I could rate lower I would. We drop my wife's Tahoe of for an oil change and car wash. Someone calls her and tells her that she needs to change her differential oil and flush the fuel injectors. Her knowing nothing about cars told them to go ahead. This was $160.00 more on top of the $217.00 that she didn't need at 50k miles when it was done at 30k miles. The only thing they care about is up sales to fatten their pocket book. I went in to get the same thing done on my car last Wednesday and they tried to do it to me as well. When we went in to pay because the person who called gets the commision on this we had to pay 2 separate transactions. While the girl was ringing my transactions up on the second one for the $217 she charged me $271.00. When I mentioned it she was like did I do that I am sorry then got the manager Richard. I paid with a debit card and they would not give cash back. Told them that now I am out the difference because it takes 5 to 7 days to credit. He said there nothing we can do. Funny how you can look at my account and the charges are there already but no credit. So I asked what was he going to do to make sure I came back and he said give you the difference back and if that is not good enough then we don't need your business. WOW...then he takes my receipt to make a copy because he new I was upset and was going to call corporate. Worst service ever.