Refund outstanding for 3 weeks

I did an online order, and after I haven't received the items after 3 weeks, I called to check what was going on, only to be informed that the products were out of stock, and I will be refunded.

I then received a refund of around R300, instead of the the full R799 that the order was.

I called 4 times, and every time I get told that the matter will be escalated, but still almost 3 weeks later, there is still the outstanding refund that has not been paid

I am sick and tired of having to call to follow up on a mistake from Edgars side, and I am really disappointed on how this matter is being treated for such a well known company.