continued charges after cancellation

I have had an 8ta telkom mobile internet contract for over 2 years. In October 2014 all of a sudden my connection was no longer working, I logged numerous calls, went into the canal walk store where we checked my modem and did a sim swap and yet nothing helped. So I was paying each month but had no connection and lost all those gigs. In novemeber I was told on the phone I could cancel as the contract ended in december.I told them thats what I wanted yet jan came and again I have been charged since! In Feb I went in store to complain and was only told then that I had to formally cancel by filling out a form! Not one mention of that in any of my telephonic contact.<br> I HAVE JUST BEEN CHARGED AGAIN!!!! AND IT IS APRIL!!!<br> My money is being ****** by telkom , since october I have lost R1400 from this contract and the entire time NO INTERNET CONNECTION?! 70 GIGs worth?! <br> <br> This needs to be rectified and I want my money back.<br> <br>