Telkom is a ****

Amazon prime video is added on my contract for the amount of R29 by Telkom and it impossible to cancel it, i always go to content services to cancel the subscription with no success, I went to the Telkom store in Richards Bay and they couldn't assist, I tried from the first month when I bought the phone to cancel the service but I'm not winning, I called Telkom tollfree number with no help, now I'm stuck with no service that I don't need and Im paying R29 for