Citibank — credit card annual fee charge

Website:

citi.com

My citi credit card was charged for annual fee $99 in november. I called the customer service in early december for asking to waive the charge because my card annual fee always got waived in previous years. The citi customer service representative told me that i could pay it first and called back for waive. I called on january 20 for asking to waive the fee but was told the policy now got changed that i could not has the fee waived nor the fee refund if i close the account. The not refund reason is because i exceeded 5 days due to its new 60 days policy for closing.
This is an example of an unfair business practice from citi bank. All these changes look like in darkness. Even in early december the customer service didn't rightly communicate the information with me when i am calling for annual fee charge. I have used this card for over ten years and now i closed this card account with the year fee refund.