If your Union Bank of India ATM/Debit card is lost or theft by somebody, the cardholder shall immediately Block/Hotlist his /her card to avoid any misuse for safety reasons. You can block your ATM card by calling on Union Bank of India 24-hour toll-free helpline number or sending SMS based code from the registered mobile number. You can immediately block your card by following any of these steps.
How to Block Union Bank of India ATM/Debit Card
To block your Union Bank of India ATM card by sending SMS, type UBLOCK<space><last 4 digits of card no> and send it to 09223008486 from the registered mobile number in the bank.(e.g. UBLOCK<space>1234 sent to 09223008486 )
If you don’t know your card number then you can contact/visit the Branch and may get the card hot-listed on from the branch end on your behalf using the above process. For any help, you can call on Union Bank of India 24×7 customer care number.