Entering the wrong PIN more than three times.
Before you try to unblock it, identify the reason for the block. This determines whether the card be unblocked or if you need a replacement .
Consistently missing your monthly bill payments.
Calling customer care is the most reliable way to unblock a card blocked by the bank for security or payment issues.
Unusual spending patterns or high-value international transactions.
If you reported the card as lost, it is permanently blocked and cannot be unblocked for security reasons. You must request a replacement card. Methods to Unblock HDFC Credit Card 1. Call HDFC Phone Banking (Fastest Method)