Prescribed debt

I had a credit with thuthukani financial services here in Pietermaritizburg and now i dont even know where to find them . But my main problem is the credit i had with them should have been priscribe long time ago, now it is jeopardizing my credit score with ITC . May you please help me find them and can they please reply here when they this complain.. its urgent thank you .. Can they please respond also on ***...