Most pathetic returns system ive ever experienced

I purchased a cell phone case at the Vodacom 4 U store in Nicolway at the end of March. When i got home, my wife had already purchased me another one, so a day or two later i returned the goods to the store with the tillslip, goods still in their packaging. Apparently they cant do an immediate refund to the credit card, which was the first problem. So i had to fill in a form with my personal details and banking details so that they could process the refund manually, which they said would take up to 10 working days. After 10 days and still no refund, i contacted the store. After phoning back for the third time after being promised they would get back to me, the manager admitted that they could not find the refund request. This is now a problem, since the store assistant took the goods back, took my form and also took my tillslip, which means i now have no goods and no proof of purchase anymore, and of course, still no refund. I am totally disgusted by this system, and the manager also now tried to put the blame on me saying i should have requested copies of the documents so that i have proof, as if that was MY responsibility and not the stores. I encourage all to stay far away!!!!