citi bank is charging me {$1.00} interest on an account that is paid in full each month. my payment is due on the XXXX of each month and they are saying i made my XX/XX/XXXX payment late as they they received it on Monday XXXX XXXX. my due date was on a sunday. it is my understanding that state and federal law say when i payment is due on a sunday they can not charge a late fee or interest until after the next business day. Citi bank says state and federal law does not apply to them. 
