COMPLETE CANCELLATION *******!!!!!

I called in to your retention department on the 04th October to notify you that I would cancelling on of my contracts that expires on the 04th November. I was told by Priscilla or Patricia that i would recieve benefits on the 01st November but it would be "taken away" or expire in the 04th meaning I would loose the benefits. Then she proceeds to tell me that I would have to pay the normal instalment on th 30th November of R369???? My point is should i not be billed pro rata from the 1st to the 04th November for the contract amount??? THIS IS A ******* AND CANNOT BE RIGHT!!!! GET INTO CONTACT WITH ME CELL C BEFORE I CANCEL MY OTHER CONTRACT AS WELL!!!!