My account was handed over to MBD debt collectors it was settled on 03 January 2017, still I can't apply for accounts

My account was handed over for the outstanding balance I had with Sportscene, however, the payment was settled last year on the 3rd January 2017 through MBD, a settlement letter was issued... On the 22nd December 2017 I decided to open an account with Foschini, the shop assistance forwarded the settlement letter and my I.D to the relevant department as my application was declined, she was then advised that I should retry opening the account again after 14 days of which I waited for, on the 12th January 2018 I went back to the store to follow up on my query, yet again my application got declined due to the R300 and something that's outstanding I failed to understand as everything has been settled and the required documents were sent through AGAIN by the store manager, he then tried contacting their Head office to follow up, we were then advised that MBD has to update everything on their side as they will not be able to, we then contacted MBD they advised there's something appearing of which the Foschini Group are the ones that has to update the information as the settlement letter was provided to them, we informed them that the Foschini Group are the ones who referred us to MBD, the consultant then advised that we contact TransUnion(believe you me whichever department we contacted it took them a good 40mins to 50mins to take our calls).. we got in contact with TransUnion they advised that there's nothing outstanding on my profile and I should contact Experian as they might a different information, I contacted Experian and got the same answer as TransUnion nothing is outstanding on my profile and referred me back to MBD, yesterday 13 January 2018 I called MBD and the lady that assisted me was amused by what I had informed her on.. she advised that she will send through a Dispute to the TFG Group, as everything was settled last year already...

I plea with your TFG Group superiors to take over the matter as I'm unable to apply for credit anywhere and I fear that every time when I apply and get declined it affects my credit profile, of which I can't afford to have at the moment... the matter has been settled already on the 03rd January 2017 already... PLEASE, PLEASE, PLEASE RESOLVE THIS!!!! Awaiting your response in anticipation.