Rude and Low customer Service

On the 30th last month i went to a Vodacom Shop in Carlton Center in Johannesburg. i asked **** arrangements with the to change my debit order date for cell Phone contract to be on the 25th of every month witch i was informed it had been done, i also requested to pay this months amount witch was done as with out being told it is too late to do so. Today on the 3rd of May Vodacom deducted the amount again witch means i am double charged. I then quickly went to a Vodacom shop in Rose-bank Mall witch is closer to where I work to correct the transaction I found a lady by the name of Carol Mapadimeng who was very rude and didn't even want to give me a chance to speak I even asked her to give me a chance to finish what i am saying she then responded that she can't help me with an incident that has happened in another store as they are a Franchise I asked her if she is not working for Vodacom she responded by telling me i must just call Accounts. This woman has no customer service at all and she is very Rude.