One call is enough to block all cards. The customer must provide and promptly update all his/her card details with OneAssist
OneAssist will communication the membership details within 3 working days of your card activation
In the event of theft or loss of wallet, the customer has to immediately call OneAssist to report the loss of the wallet and block any card registered with OneAssist. In the event that customer input is required in the form of confidential Personal Identification Number (PIN) or a Telephone Identification Number (TIN) (which cannot be disclosed to a third party), OneAssist will assist the customer by conferencing the customer on the telephone call with the issuer for the customer to provide such PIN/TIN for authentication purposes.
In case customer has not shared the details of a particular card with OneAssist and requests the same to be blocked, OneAssist shall attempt to block the same card with the help of other details provided by the customer on best effort basis.