Account handed over after you confirmed it’s settled

A few months ago I got discount offer from ABSA credit card for the amount I owe on my balance of my card. I then accepted the offer to pay R650pm for 6 months to have my credit card closed with ABSA. I then followed up after 3 months to check what the outstanding amount was as I wanted to settle the credit card but was informed via the call centre agent that the account is closed and paid up on their side but that she will confirm with the person who my account was assigned to. I then also emailed and the same was said that account I settled. Fast forward 3 months and I get a letter of deman from Anderson Attorneys for the same account that was said to be paid up and for the same balance that was initially quoted and discounted by ABSA bank, this after I just had 3 payments left which amount to R1950 but now I’m expected to pay R6000.

This is affecting my credit score and all because of incorrect information given from your side. I will gladly stick to paying the remaining payments that I agreed with ABSA but I am not paying the amount alleged by your external collectors.