Terrible management- lack of integrity

I booked last Wednesday for 14 people for 3:30pm on Sunday for the 4-6pm Every Sunday specials. I asked the waitress if the sushi platters were included and which wines. After a short while she confirmed. When I was about to order just before 4pm, she stated that the special.is now for 5pm. I spije to management regarding as to why they didn't inform us, his response was thst he didn't what we were to order. He refused to give us the special as advertised prior to the day, so we all left. Also, it's the same owner as Olive & Oil which is next door. To me its a lack of transparency and integrity. I do have a screenshot of the specials that show its for every Sunday with the times, so if we ordered as per normal without confirming with the waitress we would have paid the normal price. Management said that they couldn't change the price on the system which as I consider is nonsense. There was no intention of rectifying the matter nor doing the right thing! So, I will not be returning there nor to Olive & Oul. We spent R4500 elsewhere as a result