Shisha Hut appalling service fail

Your Shisha Hut Manager is very rude. I actually don't even think he deserves that job title when he is that rude to patrons. Wednesday my friends and I went there for after work sundowners. We got a table "outside" eventually and subsequently decided to join our other friends' table inside upon seeing space at theirs. Before proceeding to join them, we asked Walter the manager that was serving us to take our shisha to the table we were moving to. He proceeded to ask us "Where do you want to put it there? Can't you see there's no space?". We were taken aback, so we decided to leave our fresh shisha at the table outside and smoke with our friends, since they had shisha as well. When we got there we had ordered one round of drinks plus the Shisha and later water to go. Upon bringing the bill, Walter had charged us for 2 rounds of drinks and when I questioned him about it, he responded "Ya, I'm giving the other round to you". My question was "How when you are expecting me to pay for it and also, we never asked for free drinks and never have". He proceeded with his belligerence and says "You, you always give me problems when you are here". I don't know this guy from a bar of soap and this is the first time he serves me, but this is how I'm spoken to. I don't even frequent Shisha Hut that much for him to know me. Is that how the staff at your establishment talk to people, really? And why was he so insistent on giving us open drinks that we didn't ask for? This was the Gin on tap, by the way. It begs for the question: What was his plan with those extra drinks even after we said we didn't want them anymore, he insisted. It's festive and there are lots of roofies incidents floating and I would not want to be a static. Also being rude and disrespectful to patrons is totally uncalled for. I go to Shisha to relax and it's convenient, because it's just around the corner from my place, but if this is the treatment that I'm going to get from Walter every time I go there, then no thanks. Your establishment won't see me again. He is extremely rude and has no respect for those who make sure he has an income. He eventually brought the correct bill after I sent him back twice, but this experience has most certainly left a bitter taste in my mouth. If it was a group of men or a man, I'm sure he wouldn't have spoken to them like that.