Not doing what they say they did

I received an account from Telkom on 06/03/2015 of an outrageous amount.<br> <br> When I queried the amount, Telkom advised that I made a purchase additional to my normal set ADSL subscription<br> <br> After some investigation, Telkom advised that they charged me for an Office 365 package, which I never asked for or activated.<br> <br> Eventually on 18/03/2015 a lady contacted me at 17:38 advising that my account has been rectified and I should only pay my normal subscription fee. However like clockwork on the 30th of March, Telkom deducted the full amount which included the purchase I initially queried.<br> <br> Trying to phone customer care is nightmare as you spend between 15-45 minutes on hold and then the call drops. I really need them to sort this out as this is pathetic.<br>