Citibank — extra charges adding no proper response from customer care

Address:

600081

Hi iam venkatesan and iam using citibank credit card for last two years and my card ending number is 1179 previously i have no issue in card and also i make every month payment regularly but last two month iam not received any statement and i got message of payment iam very shocked because they added very much extra amount in my card and i ask customer care persons they not give the proper reasons and also they blocked my card without any information very worst service and also i wont pay any extra charges i will pay only the usage amount and also i want to close the card.