Receiving legal threats from NAVI UPI on WhatsApp

Last month, there was a bug in the NAVI app which allowed users to pay 1 rupee and avail services worth thousands of rupees. One of my friends took advantage of this opportunity and did 4 recharges totalling to 16000 rupees. Now the company has lodged an fir against "scammers" who duped them for 14.26 crore rupees and a probe is underway from the Cybercrime cell.

Now, he has recieved a message on whatsapp from NAVI UPI verified channel that he has this much amount due and police are investigating the case. If he repays the amount, they will reach out to police and banks to reverse any action taken against him.

Is it really possible for them to reverse the action taken. And how do we find out if any action was taken against him in the first place??