I too am sorry to hear this. I can see that happening with the server on Lido deck. Nearly the same thing happened to me in the Casino. I had ordered beers from a waiter. A waitress who had waited on me the night before came up asked me who I had ordered from, and told me to be fair. I couldn't believe it. So I figured this is a teachable moment and whispered to her in an effort to help "You shouldn't say that to guests". I would have let it go if she would have said it in a friendly manner. It was not. I also mentioned this in the survey they sent. Just as all the overwhelmingly good Crew members deserve praise and recognition, the bad ones need some additional training at times. I think it is a good thing for us to call them out for this purpose. Sorry your cruise wasn't up to par.