I just wanted to get everyone's thoughts about what happened and possible ideas on how I can handle it. Yesterday, I went to Jiffy Lube on my way to work in the morning. I got the oil changed and they mentioned that one of my brake lights was out. To replace it was $10. So I said yes, because I probably wouldn't do it on my own. I got ready to pay and they charged me $20 for a LIGHT! I told the guy ringing me up that "David" said it would be $10. The manager came over and then acted like he was going to go and ask David but didn't do anything. So I had to go out into the shop and ask him myself. He said yes, he had told me it was $10 but he was wrong. I then asked him why he didn't ask me if it was ok and tell me the correct price. He just didn't was his response. So I told him (and when I say "told" I yelled- which is not like me - I've never yelled at anyone in public before) I'm only paying $10 or you're taking it out. So the manager came over and he told him and the manager opted to take the light out of my car after they'd already installed it. I was so furious. I just thought it was so unethical to do that and then to not even try and please the customer just put me over the edge. Any thoughts on next steps???