POOR CUSTOMER SERVICE/ BAD SERVICE/

Good day, I am currently not happy with the service of this collection agency, i am highly UPSET, on the 22nd February i requested a settlement letter, and a consultant Juanita Erasmus assisted me, she emailed me the settlement letter and i however PAID the settlement amount and emailed it back to her on the 25th Febraury, On the 17th April i received an text msg from Transunion saying a new credit was listed on your name, and this however affected my credit score SO BAD, i called them, and another consultant i spoke to went to Juanita and Juanita Ersamus confirmed she did receive the proof of payment but the wrong reference was USES, irrespective of the reference all the information was on the proof of payment, the reference number was just on the wrong place, they told me i was listed long ago, i told them i however know exactly what is happening on my credit reports as i am registered for that service with transunion DMC was never on there, this is unacceptable to me, Juanita after two months, she never even bothered to reply to email or contact me, now i have to STRUGGLE AND SUFFER WITH A BAD CREDIT RECORD UNTIL YOU RESOVLE IT, FOR SOMTHING THAT WAS SETTLED LONG AGO