by gmparts220 » Thu May 24, 2018 8:52 pm
1. The advisor should've caught it
2. Contact the customer to pay for it. "Miss Rosenbaum, we made a mistake and only charged you for 1 rotor, however both of us know we replaced 2 rotors. Good news, don't worry about coming back up to the dealership, you can give me your CC over the phone."
If they're a good customer, honest person, they'll have no problem paying for a part they received. They also approved that dollar amount to repair their car and probably noticed their bill was cheaper when they went to pay. Have the parts counter guy make the call, that's punishment enough!