Bad service

Hi...About 2 months ago i went into the vodacom 4 u and was assisted by 1 of the consultants at that branch,i asked the consultant for a top up data contract with a tab.Before all paper work was signed i asked the consultant if this is top up and she said yes it is..Later when my bill came i saw an amout of almost r3500 deducted from my account and when i phoned the call centre they explained to me that it was my data contract bill that ran bill so high...i than went to the branch to query about this and all they did was migrated my package to top and told me i needed to do follow ups as if was a data breakage...At this point i found this to be the worst service provided taking into the consideration that it was the consultants fault and wasnt a data breakage as the consultant activated the wrong package.from than ive been calling the call centres at vodacom with no joy..To date i have not recieved a call from the branch to advise about this situation and my current bill was also high and no one was able to tell me why..Im am much dissatisfied with the service and would not refer anyone to vodacom 4 u..