unhappy customer

I was contacted by Daly credit corporation on behalf of edcon and gave me a settlement offer for my clothing account with edcon account, I accepted the offer and made the payment as per agreement I made with the call center agent Melissa Pillay. When the agent called me she had told me that I would received a paid up letter within working 20 days after I have made the payment its now 5 months i have not received a thing from them. I have been calling Daly credit corporation a lot of times and the agents will say they will load a request for paid up letter instead they send the below email after every call

We would like to acknowledge that we have received your request and a ticket has been created with ticket ATR####9#4. A support representative will attend to your request and provide feedback within 5 working days.

Matter *** Request Logged : Closure - Settlement

my inbox is full of this emails and I don't have the energy to call this people anymore can you guys please assist me.