Pet Peeve, among others is the phrase "No Problem."
Service people of all kinds are coming to use this phrase, even when it is the customer's problem/inconvenience, and that is irritating.
The other day, I was most inconvenienced by a sales person. This required visiting the store twice, driving in heavy traffic on a hot day, and finally refusing a damaged product on the second run. At the end of the transaction, I said my usual, "Thank you." I'm nice, after all, or try to be, even in 100+ temperatures.
The clerk who could have helped me immensely by being alert and thorough and involved in Customer Care, replied, "No Problem."
No Problem? No Problem? Yes, it was a problem--for me, the customer, using expensive gas and productive time, driving cross heavy traffic to get to the store, 2Xs... because the service clerk was inefficient.
No Problem is NOT You're Welcome. Good Customer Service people should train all their staff to reply with "You're Welcome."