Total incompetence from Vodacom

Absolutely atrocious service from Vodacom! I have been a Vodacom customer since I got my first cell phone. I have a three cell phones on the account. My account is always fully paid up on time. For the past four days I keep getting an sms to say "Your Credit Limit Bar has been activated" and then all three phones are blocked. Despite numerous calls to the call centre, I have been unable to open up the cell phones. Today my wife went to the local Vodacom store, where the staff were unable to unblock the phones, nor to explain what the credit limit bar actually is. Help!! I am losing business and have been put to huge inconvenience, which Vodacom doesn't seem to care about. Today my wife received a call from a Vodacom agent to ask why she had rated them zero on their sms request for rating. When she told them why, they gave her an 082 number to contact. She asked how she was supposed to call the number when her phone was blocked. They simply cannot answer! I am thinking of just moving all my business to MTN.