Failure to pay refund on items not received!!!

I bought an item in store and paid cash, item was not delivered so was forced to buy elsewhere then when I went to get a refund was told because the stores ordered it online I would need to go through a whole process which I did, it’s 5 days later after the voucher and send my banking detailings and have not received my refund mind you I was told it would take 48 hours to 5 days. Why do I have to go through loops when I went in to the Lifestyle store and paid over the counter. I want my money back! Now I’m spending more money on airtime and minutes trying to get my own money back! Sent multiple mails but noones has gotten back to me.