No Contact/Email Correspondence

I recently lost my job in December. The company I worked for was liquidated. I then phoned Telkom and told them I could no longer afford their service. I then went on to email my proof of retrenchment. Only to find that they added almost a R1000 additional to my arrears. I emailed again stating I could not afford to pay the total amount so I would pay a portion monthly. I still have not recieved a response and they continue to debit my account which causes me a billed up in bank fees that I cannot afford. I’m disgusted that after I told them I was employed they still continued to try debit me the full amount when I tried to make a payment arrangement. As soon as I’m done paying them. I will make sure I never require their service again!!!!!! My contact with them began on the 02 January 2018.