Continuation of Contract

I had a contract with Vodacom that expited 02.2015. I went to enquire n month before the expiry date to make sure. When the contract expire i took another contract with Cell C. Now in October when i was applying for n bond only to find out that the contract still cotinued to deduct untill 08/2015 as I was supposed to cancel the contract. Why was I not told that when I enquired about the expiry date. I contacted the Complaint dept of Vodacom and were told by Kagiso that its my problem i should have had it cancelled, when i ask if vodacom would give met the aitime for the 8 months i was tol i forfeit it due to my neglegence. To my knowledge is the contract is for 2 years deductions should stop not continue. I was not notified of this and require a letter to clear my name at the ITC board.<br> <br> I need urgent attention here PLEAS