Follow the IVR prompts for "ATM Card Services." You may need to verify your identity by providing your account number and date of birth. 5. Visit Your Home Branch
Your card gets blocked for 24 hours after 3 incorrect PIN attempts. It auto-unblocks after 24 hours. To unblock immediately: how to unblock sbi atm card
Here’s a step-by-step guide to unblock an SBI ATM card (debit card), depending on why it’s blocked. Follow the IVR prompts for "ATM Card Services