Still being charged after contract Cancel notice.

I handed in notice for 2 cellphone contracts that i will not renew and they can change to pre-paid when they expire. Only 1 contract was actioned and i have been charged for the other contract for 4 additional months though.<br> The call center says there is no note to cancel the other one and yet i have the scanned documents to prove that i submitted them to the email address provided to me.<br> Twice when i was told to hold at the call center the phone was just put down on me.<br> <br> I am past the place of reason...I refuse to pay another month of this contract and i want my money back for the past months that i shouldn't have been billed.<br> <br> I don't use any of these numbers that I'm being billed for since January this year.<br> These cancellations were sent more than once as well. In December and January.