WRONG ACCOUNT LINKED UNDER MY NAME

I am so angry with MWEB AND I NEED THEM TO ATTEND TO THIS MATTER ASAP, I RECIEVED AN EMAIL THAT THEY WILL LIST MY ACCOUNT ON ITC FORTHEIR STUPID MISTAKE OF LINKING ME INTO TWO ACCOUNTS, I HAVE BEEN CALLING THEM HOEVER THEY DONT WANT TO SORT OUT THE MATTER SHOULD THE LIST MY NAME I SIWLL SUE THE HELL OF THEM, I HABE ONE ACCOUNT AND ITS FULLY PAID AS I PAY MY MONTHLY THEY MUST REMOVE THE OTHER ACCOUNT FROM MY NAME MY ID NUMBER IS ***