Consumer Redressal

Hello, I\'ve a credit card issued by citi bank, Card no : 4386280020228478. The first bill was generated on April 14, 2014. The due date was May 02, 2014. Due to some financial issues, I couldn\'t pay the minimum amount before the due date. However, I\'ve done a online payment of rs 1710/- (minimum amount to be paid) on May 13, 2014. Even after paying the minimum amount, citi bank has charged my rs 1710, which was automatically deducted from my account. I\'ve immediately contacted citi bank and asked them to reverse back the amount because i\'ve already done the payment on 13, 2014. They say they can\'t reverse the amount because the amount which i paid was not updated in their system, therefore the amount was deducted. They can\'t reverse the amount because the amount which was automatically deducted from was done on the second bill generated day. They say they will adjust the amount in the next bill payment. Where as i demand for my money to be reversed back. Please look in to this.