“I do not remember things; I do not remember blocking this card/I do not know how it got blocked. I have the physical card with me though.”
On the screen, there’s no information regarding who blocked this/why was it blocked.
Here’s what could be done:
Provision for furnishing reasoning for blocking the card - via user or through admin side of the product
Display minimal information around who triggered the action (and the reason)
Additionally, go to Learn More > Frequently asked question provisioning for:
Q. Who can block your card?
Q. How can your card get blocked?
This can account for the situation.