Hertfordshire Police have again this week warned of an increase in phone scammers reporting to be from your Bank or the Police. Many of these will spoof the number, this means they can make the number that appears on your phone to look like the genuine number the bank or police would use.
See the link below.
If you think you may have been the target of a phone scam call you bank on the number on the back of you debit or credit card or call 159.