Cancellation still not processed a month later

I knew my joy will be short-lived by the customer service at Vodacom. I asked for a quote to cancel my contract with you guys. I received the quote, paid and send an email to retention/cancellation. This was end of June. I got 2 references *** and *** and none of them are closed nor did I get confirmation of any sort . I called again yesterday to ask how far they are with cancelling the contract. Guess what. Oh no please take a wild guess? Yep you guessed it right it it's still active. And the cherry on top is the agent couldn't help me because they do not know who is dealing with my case. ? I suggest you cancel that contract because you will not get a cent more from me for any bills. I am keeping this as back up for when you call me a bad payer. I dare you to. You will see the biggest nightmare of your entire lives. I thank you. ?