Tell your friend there is a Contact link at the bottom of the Terms and conditions section on the Fishheadsshop site where he can email them about his query, failing that here is the phone numbers, where he would probably have to quote his order number, but remind him to speak slowly as phone lines over distances can be bad.
Contact Fishheads Shop directly
PO Box 3
Tel: +44 (0) 1620 826150
Fax: +44 (0) 1620 826144