CONTRACT ENDED AND NEVER CANCELED

I am so super angry with vodacom. Had a contract with them for 24 months and I called them in three months before it ended which was last year June and the consultant told me to call a month before. I did exactly and I was guaranteed that the contract will be cancelled as I mentioned I do not want anything that has,to do with vodacom because throughout my 24 months contract I did not receive my monthly statement and they refused to reimburse me all my data,as I lost my number and they assured me I will get all my data when I simswap my number. I send the emails after they debited my account on my last instalment. The consultant said they can see my email and they will refund and close the account. To my surprise I was called and told my account has been handed over and I want vodacom to retrieve all my emails and calls as they say all calls are recorded. Funny enough, sometimes they call and want to offer me a contact, how can I be on arrears and still qualify for a contract. Their customer service is so bad because this people I always forcing us to take another contracts and don't listen to what we want. I want my name to be cleared as I do not owe them, they continue to lea8my account open even after I cancelled on time because they wanted to benefit