Changing rating from 5 to 1 star in last 2 months got the worst service since I am customer with Kotak Mahindra.My credit card is deactivated without informing even though all my dues paid on time. Reason upgradation of card with incomplete information provided. Pin is serviceable 686576 however bank has cancelled my request to update my present address. Neither bank has service like other banks where the card can be delivered to nearest branch and customer can show the ID proof and collect it