Vodacom ************s

I had a 24month data contract 10G day + 10G nighttime. I had to call Vodacom for access to my nighttime data. I hardly used my data. My previous contract of 2G lasted around 6weeks but the 10G never lasted the full month. 3months before it was due to expire I phoned to cancel it. They said call back 30days before it expires which I did. I got a reference number. At the end of the contract I received an SMS that the number has been discontinued. Thereafter Vodacom continued the debit order and every month I had to return it. Now they threatening to hand me over even though the account is paid in full. I called three months before the time as well as 31 days before the contract expires. Unacceptable ******ion by Vodacom. Plus the harassment by the call centers after send numerous emails with reference numbers and SMS. I also called the call centre. It's like talking to bricks