Poor service

Edgars handed over my account to them when I wasn't working. Last year I paid up my account through a discount option they gave me. They were so unprofessional telling me how much I was going to pay. I had several people calling me giving me different amounts which my account was discounted on over a period of 3 months. I ended up being angry and demanding which amount exactly do I have to pay. We resolved that. On the last month of payment they were suppose to issue me a settlement letter. On the month following the month I had paid, they sent me an sms notifying me that the debit order will go off from my bank account. I was confused and devastated, I contacted them and they confirmed I am done paying, should a debit go off they will surely refund me. I asked for a settlement letter and they said it was going to be sorted out. Until today, I never received a settlement letter. My fault, I never followed up and make it a point that I receive the settlement letter. Now Edcon has handed over my account to MBD Inc claiming that my account is not fully paid. I contacted ARA regarding the matter and confirmed via email that the matter is being sorted and they also confirmed I paid up my account. I have been waiting on the settlement letter ever since. I am tired of being harassed by the attorneys for the account I don't owe.