VODACOM - TERRIBLE CANCELLATION SERVICE AND MIS INFORMATION

I am extremely disappointed in the service that i have received from Vodacom. I have a contract line which has reached its 24month period therefore i have been trying to cancel as i no longer wish to have this line. I called in on the 25th June to cancel my line once the period is over but i was advised by the agent that she could not action as it is too early and i would need to call in between 1 - 8 July as my end date on the contract. She also confirmed that end JUne would be my last debit if i call by the 8 July which is today. Since 1 July i have been calling continuously but the voice prompts did not allow me to speak to an agent and eventually my number has now been blocked. I have sent an email, i have chatted to TOBI and none of these alternates were able to assist. Today i had to use another line to get through, and the very helpful agent then advised that Vodacom will debit me at the end of July because i called in late to cancel my contract and that airtime has already been allocated to the line which ive been trying to cancel. I have advised the agent that its extremely unfair that Vodacom debits me at the end July for something that i was mis informed about.