THE ABSOLUTE WORST SERVICE!!!

VODACOM owes me a refund for a 10GB data bundle they took from me and I find it impossible to get it out of them. This happened 3 days after the "Billing Blunder" they had on Monday the 22nd of Aug. I called the service center 3 times and only 2 out of the 3 times a service request was logged. I was promised that a Vodacom Technician will phone me back within 48 hours. Needless to say no-one ever called back and 6 days later I get a message from Vodacom saying that the issue has been resolved but guess what, I NEVER SPOKE TO ANYONE and my data is still missing. The final blow was when I phoned for the 4th time and while trying to explain this situation of them not calling me back the SERVICE REPRESENTATIVE PUT THE PHONE DOWN ON ME MID-SENTENCE!!!