Complaint

i have an contact account with Vodacom only to find that my line was migrated to an open line without my concern i only realize it when they debited R 794 instead of R2 79 i called in to find out whats happening they said the was a migration , by who? no one knows so i went to Vodacom shop in south gate they told me there was ***** alert in my account so they took my ID and there for they said i must fill for ***** dispute they said they will send to head office for investigation and i will receive the reference number via email that was on the 29.09.2018 up until today i have received anything , i was told to call in 7 days when i did they couldn't tell whats happening ,then i received the statement the amount is R 7394 still i called they yes that amount is going to be debit at the end of this month. i real do not know whats happening at this point i am not happy with vodacom, till today i have received help.