Cancel my contract

Can my contract be cancelled already, my contract ended on the 6th of September 2018 and after receiving an email that you will contact me to renew the contract I immediately requested a cancellation and even paid the amount that you said is due on the 7th of October, I don't want anything to do with Telkom, please cancel this contract, Ive paid you until the 24th month in this case until the 25th month.