Blue Waters Hotel - Lack of customer awareness

Good day, Went to have a buffet supper with the family for a 40th birthday yesterday and got there early, so decided to have an Irish Coffee with my wife in the bar area (I think it called the Blue Dolphin Bar and Pizza) on the ground floor by the entrance. When we received the drinks we noticed the cream was sour and badly enough that I left mine after a few mouthfuls. We told the staff behind the counter (Dino and Chad) and queried why we should even pay for these drinks but they ignored us and presented the bill and we noted our dissatisfaction and paid. I then asked their names as I wanted to report the issue on a site like this and once Dino understood this he suddenly started talking about refunding our money as he was now afraid to which I rep**** it was too late and had I not mentioned it he would not have bothered. He followed us up the stairs to the dining room trying to persuade us to take a refund to which I said no, it was too late and besides it could as easily happen to another customer. He should not have presented the bill in the first place or offered a replacement with fresh cream. Very disappointing that customer service and satisfaction is not foremost but remedial action is only forthcoming when one wants to take it further; their hope is that the customer will just forget it, well how customers do they unknowingly lose. We unfortunately were committed to the buffet and did not want to upset the vibe of thee 40th birthday and spent approx R2500.00 on the evening at this venue but very possibly the last time after this experience and the shortsightedness of staff. Regards, Brian