Paid up letter

I have a bad experience with FNB and DMC. I took out a loan with FNB however after i have paid few months installment i was jobless, i was then handed to DMC due to failed payments, i really wanted to pay the debt up but things didn't go according to my plans. After i was listed, DMC would contact me on a daily bases, luckily enough i was employed by the time, but i was still trying to find my feet. I phoned DMC in January and asked for a settlement amount, i was then told to pay R 5776.95, the amount owed was payable on the 31.01.2019(EFT TRANSACTION ) . And i was told it will take 3-4 working days. I then waited for a month thinking the debt will be removed on my credit history as it has a bad impact , i checked my credit report after a month the loan was still showing. I have made serval phone calls to FNB and DMC i have been passed from one department to another,i am going around circles, spoken to DMC over their live chat services i was told the matter has been escalated Thandolwakhe was the name of the agent i spoke to, from DMC, also sent an email to FNB, Nozipho Thwala assisted me she asked for a proof of payment that was on the 12.03.2019 still haven't heard anything from her since then. Tried their whatsapp services Sasha-lee assisted me, she also asked for proof of payment she advised that the issues will be resolved within 5-7 working which was not helpful either. I am stuck i dont know what to do, not even one of the credit providers wants to assist me with credit as i have bad credit record on my name. I understand they did what they were suppose to do by handing me over or listing me, and yes it is my responsibility to make sure my debts are paid but everything was out of my hands and control. I am emotionally drained, frustrated and stressed.