Postal Scam

Royal Mail postal scam.
This has been confirmed by Royal Mail. 

The Trading Standards Office are making people aware of the following scam:

A card is posted through your door from a company called PDS (Parcel Delivery Service) suggesting that they were unable to deliver a parcel and that you need to contact them on 0906 6611911 (a premium rate number).
DO NOT call this 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 £15 for the phone call.

If you do receive a card with these details, then please contact
Royal Mail Fraud on 02072396655 or ICSTIS (the premium rate service regulator) at http://www.icstis.org.uk