WRITTEN OFF DEBT RECLAIMED

SO MTN WROTE OFF AN ACCOUNT 2 YEARS AGO THEN I HEAR NOTHING ABOUT IT TILL TODAY WHEN NIMBLE GROUP CALLS ME I WILL NOT PAY AND I HAVE REFERRED THE MATTER TO THE NATIONAL CREDIT REGULATOR BECAUSE THE MONEY THEY CLAIMING WAS PAID TO MTN WHO WAS NEVER ABLE TO FURNISH ME WITH A STATEMENT