Be careful when dealing with Vodacom

I had a data contract with Vodacom that expired in May 2018. In April 2018 i called Vodacom to advise them that once the contract expires i wish to cancel it. My debit order still went off for a few months after the "final one" in May and i reversed it at the bank. I received a statement with a zero balance, which i have. I also received pre recorded phone calls saying i owe an amount of +-R200. In April 2019 i called in to sort this out once and for all, and the lovely consultant said yes i owe them the outstanding balance. I then asked her to please review the call made in April 2018, after which she politely put the phone down in my ear. Now i've been handed over and there is a judgement against my name.