National Credit Solutions Well i recieved this letter in the mail, stating that i owe Citibank money on this account, Which i never had any type of account with Oklahoma City, Oklahoma

I have recieved this letter in the mail, from National Credit Solutions, stating that i owe Citibank money on a past due account. Which i have never had any type of account with. Earlier today, i call NCS, and ask them about this letter, and a lady came on the phone, and she put me on hold for about 15 minutes,and this guy came on and told that the account was open 10 years ago in my name, and i told them that i never applied for a Citibank credit card before, and that this was a mistake, and he told me to get a police report stating that this was I denity Theft, i told him that they will be hearing from , my lawyers about this, so i call Citibank to confirm this, and they told me, that i dont have any type of account with them, and told me to get in touch the the collection agency, that, have sent to the letter.