You may receive a card through your door from a company called PDS (Parcel delivery Service) saying that they have a parcel awaiting delivery instructions and can you contact them on 09066 611 911.
DO NOT call the number as this is a mail scam originating from Belize.
If you call the number and you start to hear a recorded message you will already have been billed a large amount of money for the phone call.
If you receive a card with these details, then please contact:
Royal Mail Fraud on 0207 239 6655
Or ICTIS at www.ictis.org.uk
Or your local trading standards office