PENSIONERS are being told to be extra vigilant following a spate of scams in Dartford and Gravesend.

Victims are contacted by conmen who say they are calling from a store in Bluewater.

They claim staff have detained people suspected of using a bank card in the victim’s name and ask them to answer a series of security questions.

Instructions are then given to the victim to call either their card issuer or police but when the phone is put down the bogus caller keeps the line open.

The victim then attempts to dial their bank or police but is unaware they are still speaking to the offender, who then gets hold of details needed to steal money.

In some cases victims have been duped into having their cash cards collected by courier which allows the conman to withdraw money from their bank account, using both the card and PIN.

At least seven offences have been reported to Kent Police over the past two weeks and in one scam as much as £6,000 was taken.

Most victims are either elderly or vulnerable.

PS James Kay of Kent Police said: “These are elaborate scams which are made even more credible when phone calls are followed up by a visit from a courier who is expected.

“It is so important to remember never to confirm any personal details during an incoming call.

A bank should know your details and would never confiscate a victim’s cards or ask for PIN details under any circumstances.

Genuine bank employees will also be prepared to provide verifiable contact details for you to call them back.

“Before calling either the police or card issuer make sure the line has been cleared, preferably ring from another phone like a mobile. If this isn't possible ensure there is a dialling tone.”

Anyone who suspects suspicious behavior should contact Kent Police on 101 or Action Fraud on 0300 123 2040.

For more information visit http://www.kent.police.uk/advice/property_security/fraud/Scams.html.