No Delivery No refund despite repeated enquiries

On the 17th of June 2015 I ordered 2 x Russell Hobbs Gas Heaters (RHG03) online for R3 059.92. After a week and a half I called to enquire about the status of the order, only then I was informed that the heaters are out of stock and that they will not be receiving additional stock of the heaters this year. They then committed to refunding me. I have been following up on my refund on a weekly basis with no success. Every time when I call I am immediately put on hold and the waiting begins. On one occasion it was so bad that the phone was picked up and put on the side more than once, I could hear laughing and chatting in the background. On the seventh attempt, I managed to speak to someone who assured me that this was now resolved. I have just called and was once again told that the credit was processed on Friday. I have heard this so many times before and have to truly wonder how that department is being run. This is by far the worst online shopping experience of my life, and I do a lot of online shopping, I even buy my groceries online. Boardmans is giving online shopping and their own brand a bad name. The way I feel, I won't even walk into any of their stores after this.