Please report them to us immediately. You can do by disputing them over the phone with a Customer Service Representative by calling us at +1 (833) 426-0304 during our hours of operation, Monday – Friday 6:00am – 6:00pm and Saturday from 7:00am – 12:00pm PT.
We plan to release in-app capability for the transaction dispute process in the near future.
Your BlockFi Bitcoin Rewards Credit Card comes with $0 Fraud Liability if your card is ever lost or stolen and used without your authorization.