Poor Returns Service

I have experienced extremely poor customer service relating to the returns and refunding of my purchase. I returned cases of soft drinks, the day after I had purchased them, and was told that my refund would reflect in my account after 5-7 working days. It has now been a month and no refund has been completed.

I have phoned in multiple times and have been directed between the national customer call center and the actual store itself - each telling me to check with the other department.

I have provided all copies of receipts, proof of refund, order and reference numbers but somehow they just can't manage to give me an answer.