Citibank Prepaid Card Complaint

Citibank Prepaid card department,

General purpose card Texas

I received a prepaid $26.00 - Citibank - card as a refund for overpayment after cancelling my service in - 2015. I recently discovered that Citibank - has charged a monthly $3.00 account maintenance fee since - for not using the card on a monthly basis. This has caused the card to go down to $14.00. When I contacted Citibank they said that this was the terms & conditions that - initiated. I did not agree to these Terms and would not agree to such terms since this is a refund of services paid.