The worst service!!

I have had a wifi ****le and router with Telkom for over 10 years and in May this year I decided to cancel due to them, firstly cutting my data bundle by half, and not contacting me about it and then when I did make the query was met with rude and USELESS call centre agents. I went into a Telkom store with all paperwork necessary to cancel my contract and was told by the Telkom agent, in Kenilworth centre that I cannot cancel in store or over the phone, I had to complete a form and email it through. She then gave me the form to complete, I completed it and sent it same day -- 28 May 2017. I got a reply 2 weeks later, asking for the exact same details I had just sent, my ID number, number of ****le, etc. I then resent it. A week later, got the same email request for the same details. I resent AGAIN. I then called in on 25 June 2017, to follow up and ensure that everything was cancelled, I was told that no-one knew I wanted to cancel and that the case would be escalated and an agent would call me back the next day...no one contacted me. I emailed yet again in the beginning of July, hear nothing back. I then got debited 3 months debit order, in July. I called yet again 12 August and was told again that someone would call me back and that no one knew about the cancellation. I would like to listen back to all my so called 'recorded calls' as I have recorded all of my conversations with every different call centre agent and have been met with no luck. It's utterly ridiculous the digesting service we are supposed to just put up with! I refuse! I have been tweeting @TelkomSA everyday and was told via that platform, oh all cancellations are made in 30 days...I rep**** and said I think not as I cancelled 28 May. What the heck are the people of our country supposed to do to receive good service, you pay and pay these suppliers and get JACK in return! Its terrible!