Contactless payment is an additional feature provided on your card to perform Tap & Pay transactions. It can be disabled or enabled through IB / MB Open App.
Steps to be followed:
MB: Services > Debit Card > Manage Usage > Select Debit Card > Domestic/International Usage
IB: Cards > Debit Card > Select Debit Card > Domestic/International Manage Usage
Saksham: Visit your home branch