Horrible experience

They are ****s, someone bought data using my sim which I was not aware for R49 982, 40. The data was still not used still in a sim card they only blocked the sim with full data and said I must take accountabililty and pay for it. I wanted Vodacodom to credit it back in their account but they refused now I’m paying for something that never used. Tried to email CEO office they only gave me 20 percent off and said they don’t wanna hear from me again. Now I’m sitting on R35 000 and cannot afford to pay anymore. When I signed the contract they never explained that you can top up airtime or data and its unlimited. I begged the CEO to help me and vodacom team but they refused to help.