bad service

i had the contract with vodacom in december 2016 , then i called on the 09th of November to notify them about the ending of my contract i spoke to the consultant called Bontle on the 09th of Nov then i requested her to send me the proof of cancellation , then i called again in on then 04th of Jan 2019 to request the status of my contract i was told that the system didn't cancel the contract i asked who will be liable for the additional payment for the cancellation that was not done then i was informed that cancellation department will sent sms even today i am still waiting for the notification i spoke to the consultant last week he confirmed that i should pay 310.10 of which i did now i am told that i have to pay 568.68 vodacom service is pathetic i can nnot recommend anyone to get contract swith them below is my reference number 1- ********** ********** 7& 1- ********** 707522, 1- ********** 539118, 1- ********** ********** 5