TFG data ****

I was called byba lady from TFG saying i can buy data from my tfg account and i agreed to that and even ask if its a contract and her respond was no its not a contract, at this moment i cant even get help from MTN because my number was changed to TFG contract and i dont want any contract, ive been tryng to get hold of them without success, i spent over R500 on calls tryng to get them, i went to the store and they tols me to call them from my phone, i dont even know where to find them.