cell c contract *****

i went to cell c savannah mall in sept to open up a contract i chose a fone was helped ...was clear im not interested in other services they were offering ....ok time went by and i was suprised why no debits were taken and i got a shock that my services were cancelled om further inquiry with customer care i found out that the people from cell c savannah commited ***** with my account and i was paying for 3 different contracts ontop of that it was by luck that they captured wrong banking details or i would have never noticed .now the people at the store dont want to help and the manager is never available to talk, i keep paying for services i didnt ask for or use, moreover other services i dont even have ...i dont know who i must go to to sort out this matter or maybe go the legal route i dont know ,called legal no answer , emailed to escalations email adress doesnt work