show some respect to the customers  

I've both worked in retail and been a customer, and on both ends I feel that respect is lacking. I've definitely dealt with customers while working that have been rude to me. And I've also been treated rudely by employees when I've been a customer. It's never a pleasant experience! I feel that problems are more quickly resolved if everyone involved is respectful of one another!

Not very professional of them... If you want to see heads roll, make a formal complaint. Probably better to complain to the regional manager rather than the store/garage manager as he may be on friendly terms with his small team. The best way to deal with angry customers is to show that you care about their problem and explain what it is you'll do to help resolve the issue. They shouldn't bite the hand that feeds them... ^_^

Yes, I've had that happen quite often. I often go to a local dunkin donuts for a coffee in the evening. At nite, there isn't a manager on and so many times I've stood there waiting and all the while listening to them complain about a customer, another worker or their boss. I know their boss and all I could wonder was what her 14 yr old son would think if he strolled in and overheard some of the nasty things they were saying. It really is not good for business. Not only does the customer wait longer to be served but it really is unpleasant to listen to.