Mattress Warehouse poor customer service

I needed mattresses for a box bed and visited the Bellville/Stikland store in Cape Town on the 7th December. Because they had no stock at this time of the year I decided to purchase the mattresses on show at a reduced price and paid for it. But I found that our box bed was not standard but more queen size to my surprise. I cancelled the delivery with Jean van Wyk, the manager, on the morning of the 10th December. He confirmed the cancellation and would send me a refund form that day, and that it could take up to the next Wednesday for a refund to be finalized. To date there is no refund. I further sent an email to their head office on the 22nd and received an apology and confirmation that I will receive feedback before close of business. No response was received and I then sent a reminder on the 24th. The response was that it will be attended to and I will be informed accordingly. Still no communication as to when the refund will take place. It seems that this company has no customer interest at heart as I cannot see why a refund should take more than three weeks without real contact with a customer regarding progress. It is retail shops like these which should be avoided