Try a sample:

Already lost money or shared details?

Act fast. Banks can sometimes freeze the money if you report within the first few hours.

1930 National cyber crime helpline. Call to report financial fraud.
cybercrime.gov.in File an online complaint with the National Cyber Crime Reporting Portal.
Chakshu on Sanchar Saathi Report a suspicious SMS, call or WhatsApp message even if you didn't lose money.

Also call your bank's official number (printed on the back of your card) to block your card or UPI.