Edgars Airtime Subscription

I have an Edgars account and subscribed for the mobile service which I was not aware at first and when I realized (about two years back) I tried to cancel the subscription with no luck. I was told on the phone when I phoned them that it was cancelled and later they told me that they phoned me back and I did not answer the phone and that was their reason they didn't cancel my subscription, and because of the subscription I can't close my account. I tried again this last December and I only spent a lot of money (about R 300) calling them as they make one hold for long every time you call and I am still subscribed. Now my SIM Card id old, I cant do a SIM swap or port my number because of this problem.