Unlinking a number from account

I have been trying to have this number removed from my account for the past five months *** - FMC Mobile ). I do not know who is using this number because I have never used it. When I was offered this package by one of your agents they told me it would cost R569.00 a month including two SIM cards. The one card is for voice with a limit of R50 and the other is data with a limit of 500mb which I have never used. I do not understand why my account always has -/+R800.00 that is in areas every month, I have called 10210 for many times and no one has helped me. My account has been suspended at least three times this year because of this. I have even tried to cancel the package with Telkom, and that you do not want to do either. Yesterday I logged a dispute on your website and its showing that nothing has been logged. I do not understand what is so difficult about unlinking a number from an account, because as the situation stands now, this is *****. This number might have even been linked to my account by someone who wanted to use it for themselves knowing that I would have to pay for it. I have had enough now, you will not be receiving a single payment from me until this is