Mattress Warehouse, poor service!

On the 25 of June I ordered and paid for a mattress from the Mattress Warehouse, and I paid an extra R500 for delivery. After promesis from Tshepo at the Midrand branch that I will be contacted on 8th of July with the delivery details for 10th of July, he did not contact me. So today, the 9th of July, I contacted him and was told that he delivery will only take place at the end of next week. If I did not pay to have the mattress delivered this would not have been a problem, but I feel that having paid for it, it should be delivered promptly. If you need a mattress urgently I would not recommend buying it from the Mattress Warehouse!