Check In Issues Wild Coast Sun

I booked a stay at the Wild Coast Sun for my family. The booking was made a while back, for a birthday celebration. This was our first stay at a Sun International resort, which we were excited about. After checking in we were allocated our room (226) & provided with the key. We went to the room & found that we were unable to open up. After a while we heard sounds from the inside & someone opened the door, which we had a key for! To our surprise we found that the room was already allocated to someone else. I went back to reception for clarification. We were informed that due to booking errors we were allocated an incorrect room. The reception tried to resolve by offering a suite, but this was not accepted as we did not pay for a single bed & for someone to sleep on the couch. The whole experience & frustration experienced with the check in, ruined what was meant to be a good birthday & left me with a bad First impression of Sun International as a group. The group should surely have processes in place to avoid such mishaps.