My friends and I went to the Portland, OR Melting Pot for a fun
fondue dinner. Once we arrived, we saw that the prices were a bit "spendy" but we decided to stay and share a few different dishes.
The service from the get-go was S-L-O-W, our drinks took a long
time and our waiter was perfunctory. When we informed the waiter
that we'd be getting just a few items, he was visibly miffed and
proceeded to virtually neglect us the remainder of the evening.
He "forgot" to put in one of our selections and getting drink
refills proved to be akin to pulling teeth - even though he only
had THREE tables. The restaurant itself was not crowded either.
When the bill arrived we discovered that "double" drinks were $8
apiece! The bill did total $80 - had he done his job that would
have meant a $16-$20 tip.
This is only time I have ever NOT left a tip. The waiter's
demeanor so expressly implied that he felt that we were "below" his consideration that I have vowed never to patronize the Melting Pot again.