Harassment by MTN

1. On or about 2017 I entered into a contract with MTN, which was subsequently upgraded in 2019. 2. I took a sim-only contract for 20gb anytime and 20gb night data for R199pm. 3. The contract was then increased to R210 per month and I disputed the amount to be paid but continued to pay as I was advised by MTN that they are entitled to do so according to their terms and conditions of the contract. 4. In 2021 the contract was increased to R320 per month. 5. I contacted MTN to enquire about the increase and was advised that the contract had come to an end so the promotion was no longer valid. 6. I sent two emails requesting the cancellation of the contract. 7. On 17/06/21, MTN requested me to provide them with my banking details and ID number before they can assist me of which I comp**** with the request on the same day. 8. I confirmed with MTN to cancel the contract on 24/06/21. 9. I received a Letter of demand dated 20/10/2021 from MBD demanding payment in the sum of R1600. 10. I have been receiving endless letters of demand from there on that I had to take the matter to my legal representative.