Citibank Credit Card Complaint

Citibank Credit card department,

Billing statement California

I was charged a late fee on a credit card payment with CITIBANK due to stolen us mail statement, I being a client for Citibank for over 20 years, and when I got the notice 2 days after the due day, I call them 1st, they offer to reduce the late fee by $15.00, I told the rep, should be the entire amount, but it escalate it to the manager who said it will wave nothing.I went to the local branch and made a payment personally. I wrote them a letter with all proof of mail being stolen, and received a response of not accepting, on my next statement they have add extra minimum charges. Citibank is changing the credit card policies to get more fees. without proper notices, I as a consumer agree on a bank making their % money and fees as long AS THEY DISCLOSE THEM PROPERLY, Citibank to my opinion is not doing this part clearly and honestly.