Rogue Traders – Rogue Traders sometimes target elderly vulnerable persons, saying that their homes need work doing to them when they don’t. Once the homeowner agrees to work being done the price quoted increases several times. Police advice never to buy from cold callers as you are never quite sure they are who they say they are. We have provided you with this “No Cold Callers” sign below to cut out and put on your front door to deter cold callers.