Took all my airtime before even using it

I am writing this review with such dissappoint. After years and years of using MTN . I just bought airtime of R100.00 with the intent of buying d data . It all went away ..i just called the customer care and the lady says that i subscribed to things which i did not suscribe to . I am very dissappointed i will be moving to another. Service provider MTN is pathetic