Very rude and disrespectful owner

I entered this restaurant at about 13h50 pm intending to sit down for the R165 pp buffet offered by the restaurant on Sundays (as per the advert appearing on the restaurant wall outside). I was met by a waiter at the door who said there are tables available but it'll cost me R650 per couple for the buffet. I asked him why that was the case when the R165 pp buffet was advertised and displayed even today. The waiter couldn't answer me and said its the owners who made it so. I asked him where the owners are, the waiter pointed at an Indian man sitting at a table in the restaurant. I asked the waiter if I could speak to him. The waiter called him as I waited outside the restaurant. The owner walked out but first made sure to make a call on his cellphone. He proceeded to talk on his phone for approx 5 minutes while standing in front of me, throwing words like "****" to the person on the other end of his call. When he was done he turned to me with a flip of his hands and asked what my problem is. I told him it was the waiter informing me of a drasting change in the pricing of his restaurant's buffet. The owner first tried to lie to me, said "we are fully booked". I disputed that, reminded him that I was already offered a table by the waiter but he said I would be charged R650 instead of R165. The owner then told me he's not responsible for the R165 pp buffet advert posted on his restaurant walls, said his customers know of his R650 Valentines Day special coz its advertised on his Facebook page. I told him I know nothing about his facebook page. He said I should have called the restaurant to ask about the R165 buffet before going to the restaurant. I asked him where on the advert was it said that the R165 pp buffet is conditional and only available to those who call first. He then got very rude, told me I can go complain to whoever I want to complain to. I said I will do exactly that.

This is a warning to out of town travellers and customers like me who are not usual or repeat customers of this restaurant : don't patronize this establishment. The owner doesn't care about you or value your business.