There are card cloning devices used at certain stores/petrol pumps/restaurants to steal your debit or credit card information.
Such devices are known as skimmers & used to steal information stored in card's magnetic strip which contain information of card holder's name, card number & expiry date.
To protect yourself, never reveal your PIN or hide it while typing the same at the store.
In case your card is cloned and used fraudulently, block it immediately & register complain at the cyber police station.
Recently, a card of a customer was cloned at a Petrol pump in South Mumbai.