Hi!
They will not always respond to your emails but I think they will process your request anyway. I have send 3 emails (1 normal and two reminders) and I have received my cable about a month from the first one.
Have you provided them with all the required info (mentioned in the 1st page of this thread, as well as my post here)?
And perhaps, you can try and ask them if they have received your emails, in the official "Contact Us" page, here.