I had the singularly worst service I have ever received at a restaurant at Babbo in 1998. Without going into too many details, my waiter was horrible, I gave feedback and tried to have the situation remedied several times, and received no adequate response.
The waiter was terrible, rude, unresponsive, rude, inattentive, and offensive (although he had a lot of time to titter, chatter, and pose with a table of his friends). As he was unwilling to describe the wines in the tasting menu matched with wines, I asked to speak to the sommelier, who attempted to improve the situation. Unfortunately, despite my request, the waiter was not replaced and the bad service declined. When I gave my honest opinion to the manager, all he said was, "Yes, we've had some complaints about that waiter." No apology, no remedy, only unacceptable service.
I am a patient, pleasant chowhound who comes from a restaurant family and who worked in service-oriented restaurants growing up. I also spend an inordinate amount of time and money eating at restaurants. That evening represented the nadir of my dining experiences. Needless to say, and despite the quality of the food, that was my last trip to Babbo.