When you get a scolding from a customer when it's your fault, just accept it. Yes, swallow your pride and accept it!
When you get a scolding from a customer when it ISN'T AT ALL YOUR FAULT, just accept it too. Yes, swallow your pride even harder and put down your damn big ego and accept this statement of "customer is always right"
It's a harsh truth but face it, Liza. Forget about rebutting, you'll never win. As a sales person, your reputation goes with you wherever you go.
A hard lesson learnt. (: