MOST DISGUSTING EXPERIENCE EVER !!!!!

I am so utterly disgusted with the level of service I recieved from the staff and senior management of the Hilton hotel this past weekend . My family had booked 8 rooms for the 28th Feb. I called the hotel that morning and speak to Phumla Ndwandwe who confirms check in is at 2pm .I get there at 2:15 pm to be told that check in is at 3pm ,no issues as I said i I will have something to eat at and then check in at 3pm . Phumla had sorted out my check in details - confimed my room number to be 120 and confirmed I can check in 3- only to get there at 3 to be told that there is no room - my resrvation number is for 28 Jan instead of Feb and that my room was given away because I had come late - I stood for 2 hours trying to explain to rude , uncoth staff of the hilton who refused to sort the issue out and treated us like we were incoviniencing them- the operations director was extremely rude and embarrassing - when he said to us that he has no obligation to speak to us as we are not guest of the hotel . Is this the level of service that a 5 star hotel offers - they had short booked 2 rooms and evenutually had o send us to elangeni to try accomodate this error - I need my money refunded.