I haven't heard of Bitnovo and there's a charge on my card

If you see a charge from Bitnovo that you don’t recognize, contact your bank immediately to cancel the card and dispute the charge. Also, inform Bitnovo by providing the first six and last four digits of your card, your full name, the approximate date and time of the transaction, and any other relevant details so they can investigate. Acting quickly is essential to protect your finances.