Disgusting customer service

Vodacom has the absolute worst customer service ever. I called in and logged a request for a voucher to be cancelled and my Vodbucks returned to my account. This was more than a month ago. I called in again on the 24th of September and was told that the service request wasn't logged. Up until today the issue hasn't been resolved yet. I called in earlier and spoke to a rude customer service agent who told me there's nothing she can do, I must just wait for 7-14 days. She literally raised her voice and screamed at me. I had to tell the lady to calm down as she kept raising her voice and getting irritated. Vodacom has absolutely no idea what customer service is or how to speak to, or deal with irate customers. Agents are just plain rude! I have never in my life dealt with a company like this. I would never recommend Vodacom to anyone, ever!!!!