*****ulant account

They is an account open at Vodacom Braamfontein,branch code:46250 that I ddnt authorised or know about. I send the relevant documents and obtained ref:EC-O4N2-2P644B. when I call to inquire I don't get help as the consultant will tell that I called a wrong department. I have recieved a final letter of demand that's worries me. The residential address on that letter is not mine let alone the surname used I have never open a retail account using it but the ID number is mine.what frustrating most is the email i send documents when i make follow - up i can see that someone is reading it but i never get a respond to my query. I have to be blacklisted for something that I didnt do.