Unfair, Inconsistent and inexplainable billing

My R299/month contract ended on 30/11/1015 and Telkom continued to bill me R99 for the data. I asked them to cancel it and was told to fill in a cancellation form which would take 30 days to clear. I did that at the Sandton City branch on the 03/01/2016 and accepted that I would be billed for another R99 for the last time for data that I don't even use as I now have wifi. <br> Yesterday I received an invoice for R505 and when I called Telkom I was told that my account is still active and the monthly amount has gone up because when I took the contract they were running a special and now that it's over it has gone back to normal price - which is very unfair. I was paying R299 for a 10\ Samsung Galaxy Tab with 10Gig data and now they are charging me R505 for 2.5Gig data?<br> Another consultant told me to send the cancellation form so that she can assist me but when I call the Sandton Branch to request a copy of the form that I've already filled I cannot go through, meaning I will have to fill in another cancellation form and start the whole process again? There's got to be a better way, I was ****** in the beginning and now about to be ****** again at the end of it?<br> Seriously, #TelkomMustFall"