I was served a bowl of left-over mussels that came...

I was served a bowl of left-over mussels that came in a bowl of dirty salt water (presumably the same stuff they store the mussels in after cooking them). When I asked the waitress about it she lied and tried to tell me it was a white wine sauce. She did admit I was given an "extra big portion because the cook was going to throw them out anyways". So basically I paid to be their waste disposal service?

Granted, we visited the place later in the shift, but when I pay the same price as the people eating at the start of the shift, I expect the same quality.

Very disappointed.