Debt-in Useless

I cancelled my Telkom fixed line in 2017 and paid the outstanding amount of just over R1300. Now 2 years later I starting receiving calls from rude and useless agents from Debt-in. I initially asked for what invoices they were demanding payment. After about the second attempt I received a mail which had no Telkom invoices attached by merely a demand for over R2000. Eventually I received some copies of invoices from Telkom for months in 2018. I rep**** to Debt-in indicating my cancellation letter in 2017, my proof of payment etc and told them to go back to Telkom. I have had another 10+ calls from these useless agents. I am becoming quite rude and have told them that I will not speak to them over the phone and will only answer written correspondence.

The real people to blame are the management of Debt-in. Don't they train their staff, listen to phone calls and assist to improve their systems. Obviously not.