Unhappy Customer

I am very unhappy with Vodacom for charging me for data auto refill. I did not sign up for the service and yet I am being charged service. I have called the Vodacom contact center to deactivate the service, and the service agent told me she cannot see the service on my account and yet billing information reflects on the invoice. I was told to dial *135*06# to deactivate the service. I did that and I got a message “the data refill service is not available for your payment type” The bill for the data auto refill is already running up to R1300 but Vodacom can’t find the problem and is unable to assist me to deactivate the service that I did not request in the first place. I have also visited that branch at Bayside Mall and was told that this service is not on my account and was send to another branch. This is their system so how is it that nobody can assist me to deactivate the service. How can I be charged for something that is not linked to my account? It is unfair that I have to pay for something that I did not request. I have called the call centre again. The service agent tried her best to assist me to deactivate the service but was unable to do so because this service does not show on my profile. She logged a request to have the matter resolved but the downside is that I will receive a response only after 4 days. I am extremely unhappy with the predicament I find myself due to Vodacom`s inefficiency.