Edgars Account and credit checks

wow i cant believe this company at all! in 2016 i went in to Edgars to pay my outstanding amount and close it completly down, a few months later i got a call that there was outstanding balance still and i had to cancel a funeral plan????? so i went in and cancel the plan and payed the outstanding amount, So two years later i believe in good faith that my credit was clean i kept paying all my bills, so i had to apply for a vehicle finance loan that i waited two years, just to be rejected due to an Edgars outstanding amount of R91!!!!!!!!!!!!!!!!!!!! In two years no calls, no emails nothing just a random outstanding amount they wanted to add to my name!!!! So i went in once again and the lady made a call thru to customer service, great they apologized and asked for 48hours to correct it from their site and then send me an email so i can attach it to my application! its been 8 days, about 20 calls and i am still waiting for them to actually send me the email and correct their mistake! i feel so frustrated and i honestly dont know what else i can do to correct this! I wish the banks could hear both sides before making a judgement about loans because apparently they can add stuff to your name without notice!