Non Payment on time specified

Vodacom provides the worst customer service ever!!! I had an outstanding amount on my account which was paid back. My husband by accident paid in way more than he was suppose to. I have sent the proof of payment with reference number in September already. When I did not hear anything from them I phoned them in Mid October. On that day I spoke to a few people, before someone decided they want to help me. On that day, a specific amount was given to me which would have been paid within 7 - 14 days. Nothing received. I phoned again. Same story, spoke to a few people. Then suddently they said they are waiting from proof of payment. Whats the point of having a reference number then? Sent it through again. Payment was then promised in 5 - 7 days. Nothing received. On 20/11/2015 phoned again. Was on the phone 30 min, and to hear they are still waiting for proof payment. ( E-mailed it again 3 times. And up to now, still NO FEEDBACK AND NO PAYMENT!! Amazing how they phone you demanding payment asap, but I have to wait more than a month and a half for my money!!! Absolutely pathetic, never ever want anything to do with Vodacome again.