I know exactly how you feel! There have been just a couple of times when I've gotten so angry that I burst into tears. Once was when Pep Boys caused damage to my car after supposedly doing repairs on it (including, but not limited to, replacing the battery). Can you say $800? They failed to connect a fuel line back to the tank. I picked up the car and started filling up with gas. Gas gushed out beneath the car, and fire department had to be called to hose down the mess. I went back to Pep Boys screaming, shaking, cursing and crying like a maniac. I wish I could have been more in control, but I totally lost it. At least I scared away some potential customers and got a refund.