Data charged, vodacom admits technical problem, no

2nd time this year data usage has been charged from my account ********ly, due to a technical problem from vodacom. I never get paid back the money ********ly deducted from my debit order.<br> I got a letter \ONCE OFF GESTURE OF GOODWILL"on 10-03-2015 that the money will be paid back to me. That never happened!! Now for the second time this year"