Fishing mails to my customers

I have already lost a guest due to the below message they received. Need your immediate response 


Dear guest! We would like to inform you that all guests must go through a credit card verification process, even if the reservation has been paid in full, in accordance with changes in the legislation of our region. Otherwise our system may automatically cancel your reservation. Please start the verification process now, it won't take long: https://booking.re-approve-order-04613.com/6348769454 Note that in order to verify the validity of the card, a transaction will be made, which will result in a temporary reservation of an amount equal to the value of the booking or a random amount. These funds will be promptly returned to your card by the system within a few seconds. Best regards, administration of Koroneia Residence

Its highly important!!