Don't hold your breath...I've been through this many a time and many a time an email has gone. unanswered. I presume they have a mail filter set up for their Inbox which has the following parameters:-
Where the Subject Line and/or Body contains the words 'Refund' do the following:-
Move to Trash and then
Delete
:mysmilie_17:
Call them, it's the only way you'll get results and yes...it will cost you. I tried last time to get them to do something via Live Chat, but they told me that I had to call 'for security' about Refunds. I reminded them that this would cost me and that online retailers are supposed to have a free method of contact and was promptly told that they do - Email - that they never respond to. Well done.