Waiter feels entitled to customer's money

On the 02-03-2020 I received the worst ever customer service at the Primi in Canal Walk. After receiving less than satisfactory service from our waiter, he has the nerve to ask why we gave him such a small tip. My Girlfriend unformed him that we struggled to get any attention at all during our meal, despite the restaurant being empty. Every time we needed something our waiter was either chatting or playing with his colleagues and had to have our hand up for several minutes before him noticing. He listened to her explanation and just say okay. He took our payment and as he was leaving stopped to say "You know, a 10% would be appreciated" and walked off. I was confused as to what he meant by the statement. I followed him to the bar and asked him what he meant. He then repeated his statement saying. It's standard procedure to tip 10%. I then reminded that we just explained that he ignored us the whole time. And he said to me "Dude still, next time you eat here tip 10%" I was shocked and appalled. Despite the fact that he did not end up apologizing for his bad service. He had the nerve to tell to my face that he is entitled to my hard earned money regardless of the service he gives. I went on to tell him that was the last time he ever addresses my girlfriend like that and that thanks to him we wouldn't ever be spending our money at any Primi restaurant and promptly walked out.