Refund Delay

I ordered Items online in July during your sale and 1 of the items was out of stock. Sent all the requested documents on 18th August for you to process my refund. I called to follow up on the 2nd September as I hadn't received any communication after sending my documents and was told the accounts department was offline and someone would contact me after 12. I called again yesterday as no one had contacted me only to be told you only processed on 2nd September after my call so need to wait 14 days starting on 2nd September. Why am I being inconvenienced for your delay in actioning my refund? I want my money.