I think you will find that DaveM's post is 18 months old and it isn't up to date.
A search on the Royal Mail website reveals that the company at P O Box 9340, Dunoon PA23 8WQ is in fact DDL Mail Order Services.
Their various contact numbers can be obtained from their website at:
http://www.database-direct.co.uk/contactus.htmlDunoon - Call Centre and Operations
The Network Centre,
Highland Avenue,
Dunoon, Argyll,
PA23 8PQ
Tel: 01369 706789
Fax: 01369 703113
Edinburgh - Research and Analysis
Network Suite,
2 Quayside Mills,
Edinburgh,
EH6 6EX
Tel: 0131 555 5505
Fax: 0131 554 6379
Ellesmere - Mailing and Fulfilment
Network Buildings,
Junction 8 Business Centre,
Ellesmere Port, Cheshire,
CH65 3AS
Tel: 0151 357 7700
Fax: 0151 357 2813
Wilmslow - Accounts and Administration
Network House,
Altrincham Road,
Wilmslow, Cheshire,
SK9 5ND
Tel: 01625 526 914
Fax: 01625 522 564
The Cashmere Company website gives the following contact details apart from the 0870 phone number:
Fax: 0136 970 1187
customerservices@cashmerecompany.com
Good luck and let us know how you get on.