VODACOM Bad Service, Bad data, Removing accumulated call time.

Really peed off. Phoned to query why VODACOM has taken away my accumulated call time and was told it will take up to 7 working days to respond to my query.. Really that long..they must have alot of unhappy customers if that's their turn around time. And since when can you not accumulate the minutes you have paid for. I really cannot explicitly say how I really feel right now about VODACOM: 1.Consistently dropping calls 2. Supplying very bad connectivity 3. Slow and interrupted data And to top it all.. Now they ***** from us taking away our accumulated call time.. That's theft.. I have paid for those calls, I was never told they would expire after 2 months by any branch.. Can I go and get a refund from VODACOM for bad service and connectivity. Here I was thinking VODACOM were the best. BIG MISTAKE.