VAS not signed up for

In March i was debited an additional R 95 for my Netstar account, Upon querying this i was told that it was for a VAS (Road guard) which i had signed up for, I had no record of signing up for this product so i contacted customers services to have this cancelled immediately (09/03/2016) and to provide me with a refund, The agent at the time said that he would cancel but he will not be able to assist with a refund as he would need to pull out the transcripts to verify that i in fact did not sign up for this service, The debit for this service went off in April, I contacted customer services to again cancel this service which i had initially not signed up for and received the following ***, I asked the agent to please forward the cancellation in writing to myself which i am yet to receive. I am also waiting for the transcripts to prove that i in fact signed up for this service, if these cannot be produced then i would like to be refunded immediately, i don\t see why these transcripts are so difficult to obtain as the voice log is basically my authorisation to debit my bank account, if these cannot be provided then you are *******ly debiting my account."