Here is some info that should help you:
MATSUI is actually a subsidiary of Dixons, which is owned by DSG International. The CEO is Lord Kalms of Edgware and the Chairman of the Board is Sir XXXXX XXXXX.
Here is a link to the corporate headquarters mailing address as well as their customer service information:
In case you have problems with the link:
All customer issues within the UK can be emailed to email@example.com or call (You would call the Dixons number):Currys - 0844(NNN) NNN-NNNNbr />PC World - 0844(NNN) NNN-NNNNbr />Dixons.co.uk - 0844(NNN) NNN-NNNN/p>
Head Office address is:DSG international plcMaylands AvenueHemel HempsteadHerts HP2 7TGTheir telephone number is XXXXX(NNN) NNN-NNNN(or +44(NNN) NNN-NNNNfrom outside the UK).
I hope you find the above information useful. Please let me know if I can help further,