Well, it if makes you feel any better, I've been trying to speak with Dreams (the bed company) today and their customer service department is perhaps one of the worst I've ever had the misfortune of coming into contact with.
They’ve sold me a bed with a very obvious manufacturing / design flaw but all they seem able to say is, “have you flipped the mattress, sir, as some settling is normal.” Which then turns into, 'well sir, could you just flip it for another few weeks to see if this cures the issue' when I ask how they plan to resolve my concern.
Missed this thread over the holiday period.

Have you resolved your 'issue' Simon, if not try these people
Auping - we can highly recommend their beds.