When disputes arise between repair shops and customers, many car owners are quick to get on the phone with their credit card company to reverse the charge. The chargeback is an important tool when things get bad, but don't pull the trigger too fast. Communication is key when you're in any type of transaction. Sure, if you think you're being scammed or stonewalled, get the ball rolling on a chargeback. I urge drivers to use a credit card for all of their maintenance and repairs they have performed at a shop -- it's good protection. But if you skip the important communication steps and don't try to work things out, you might be shooting yourself in the foot. As soon as the chargeback takes place, you're telling the shop that you're finished talking and you want the powers that be -- the credit card company -- to decide the fate of the transaction. Unfortunately if you have a legitimate dispute but it doesn't qualify for a chargeback, you're going to lose. If that happens, what are the chances your mechanic will be willing to work something out? He probably won't even want you as a customer anymore.