Citibank Credit Card Complaint

Citibank Credit card department,

Sale of account California

American Express lost its business relationship with -, and the consumer was forced into doing business with - moving forward. Prior to this merge I had a dispute that was submitted with American Express against a merchant that could not deliver ( after multiple opportunities ) on what I contracted them to provide. After providing American Express the information in the dispute and a short period of time, my account was credited the disputed amount and the matter closed. A month later my relationship with American Express ended with the end of their - arrangement. A few months later and with my - card this disputed amount mysteriously appeared on my statement! This was not a charge that was authorized on my - card! It was a charge on my American Express card and the matter had been closed, as well as, my account with American Express was closed. Because of the account closure I was unable to discuss this fraudulent charge on my - with American Express, I was directed to talk to -. I have been back and forth dealing with a closed dispute with - and a fraudulent charge that was NOT authorized by me. I have explained to - that this is - separate accounts, and no one is authorized to put charges on my card except for me the authorized user of this card! - would like me to believe that the businesses merged and my account is with - and that - just took it over from -, NOT American Express ; nonsense! Credit card relationships are unique to that credit card provider. American Express, and - are separate business entities with separated agreements and terms and conditions. When American Express closed the account my relationship with them ended on that day. Any past disputed charges should be between American Express, the merchant, and myself ; not between a new credit card provider and a past closed dispute. PLEASE HELP!!!