FURIOUS EX CLIENT!!!!!!!!

I AM VERY DISSAPOINTED AND UPSET WITH FILTHY COMPANY "METROFIN'".. I HAD A LOAN WITH THEM IN 2016 OF WHICH IT WAS FULLY PAID AND ITS STILL REFLECTING ON MY CREDIT HISTORY AS ARREARS.I HAVE LIASED WITH THEM MANY TIMES TO CLEAR MY NAME ON ALL BUREAU'S BUT THEY HAVE FAILED ME TILL TODAY! NO ONE IS WILLING TO GIVE ME FEEDBACK AS OF 2017 TILL NOW. THEY PROVIDED ME WITH A SETTLEMENT LETTER AND ADVISED TO CLEAR THE BUREAU BUT THEY HAVE FAILED TO DO SO AS I CANNOT MOVE ON IN MY LIFE DUE TO AN ADVERSE WHICH APPEARS WHEN APPLYING FOR ANY CREDIT AND DOESNT EVEN HAVE A MONTHLY INSTALLMENT WHICH I PAID WHEN I WAS STILL THEIR CLIENT BUT JUST A HUGE AMOUNT WHICH TAKES MY AFFORDIBLITY.