Neighbourhood Watch has sent out a warning message about scam phone calls to its members in this area.
It says: "This alert is being circulated due to the amount of calls being received. Over the weekend there have been a number of calls to elderly persons in the Wrexham and Flintshire areas purporting to be from the HMRC (Tax office).
"Fortunately, some supermarket staff have thought that this was suspicious and have stopped the elderly person from going ahead with this fraud.
"Some persons have already been conned into sending over the details of the vouchers and enquiries are in hand to catch these people.
"This is a SCAM don't let these people get away with it.
"The Tax office will not phone people at home demanding money and expect a payment via ITunes.
"Please pass this on to your family and friends to ensure no one gets caught out with this scam.
Officers are visiting the local supermarkets to speak to the managers to make them aware."
If you need to reply regarding this message, click on this email address: firstname.lastname@example.org