Noticed this on the UKNP forum
For your information
If you receive a card through your door from a company call PDS (Parcel
Delivery Service) saying that they have a parcel awaiting delivery
instructions and can you contact them on 0906 6611911
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 £15 for the phone call.
If you do receive a card with these details, then please contact
Royal Mail Fraud on 02072396655
or ICTIS at
http://www.icstis.org.uk
or your local trading standards office.
This is a genuine scam.
ICTIS have the following information about this number.
This is a card posted through your letter box from PDS Parcel Delivery
suggesting that they were unable to deliver a parcel and to call the premium
rate number in question. This service costs £1.50 per minute.
This service is under investigation by ICSTIS.
Please be aware of this scam and forward this information to as many as possible.
Should you receive a card from this company please follow the above instructions.