REDICULOUS BILL

In the beginning of September I emailed customer service and received a call back, I told the cellC consultant that I don't want to continue with their package as soon as my contract ends on 12 October 202. All this months my bill was R198. 99.

Now I receive a billing statement that says on the 31st October my billing will be R303. 81

Why do I have to pay such amount and where else i requested not to recieve any packages you offer to me? What exactly a I paying for?