Vodacom sp

Please investigate this matter, it's reflecting bad on my credit score,it appears I opened an account on vodacom then my account was hende over to one there collector's but I payed up all the money last year ,,I requested for a paid up latter until now I didn't get it..so now it's affecting my credit score so please try to get rid of this.my contact number is *** if you have any questions call me Thanks