Citibank review: Credit card predatory practice

Citibank has a credit card in my name ending in 7168. I have made 29 calls to the account services/fraud organization at Citibank trying to get information regarding charges for this account. No resolution and not helpful. Because Citibank was so derelict in the ability to help. I shut down my primary account with Bank of America to shop charges. This resulted in all electronic payments having to be reset. Only when I shut down charges did I receive an email from AAdvantage notifying me I had a payment past due. I logged into Citibank self service portal and this account, 7168, is not even associated with me but somehow I am expected to pay unknown charges, nothing has been charged in years. However, they will not provide any helpful information. Call 29 resulted in two actions (1) the account is still under review, although charges are due that could be fraudulent, while I have no access or way to pay, even if needed, (2) an account history back to 2016 is in snail mail, not helpful when payment is potentially due. I asked for payments to stop until a resolution is reached. This has been denied.