Disappointing service

I'd give them a 2 star just because th food was good but the service , very bad. I went to the cornubia branch. My husband and I went there on Sunday at around 11eish. We just came from a holiday. The waiter , Thula, was not pleasant at all. I placed an order with him, two minutes later I changed my mind about an item, I walked up to him as when I called he didn't respond, he said nothing can be changed. This baffled me as i placed the order just the. Then I asked for a jug of the juices they have. He said nothing is available, next minute I see him bring jugs for two tables. I never said anything. I ordered 500ml coke and passion fruit juice. H comes with a 300ml can and says they don't hav stock , didn't ask jus started opening the can. I felt he wanted us to rush out as he had a big table he was serving, Ive never left a R0 tip before this was the first time I did.