Reap off

Vodacom has over charged me on my contract that I have with them for 2 months in a row now. On the 12th I called their unhelpful call center to register my complaints and they said they've picked up there error and that they have logged a refund that would take approximately 7 days I haven't received that instead today they doubled up. This is not my first dispute with them I even regret taking up this contract. To make things worse I hardly ever use the benefits if it were possible I'd cancel them and just pay for the devices. This is such a big inconvenience. Maybe we are paying the bill for please call me.