muddyknees2000 said:

They apparently sent Ady some paperwork with the incorrect model number typo on it, and since he didn't correct them on the error BEFORE making a claim they're refusing to pay out.

Did Ady acknowledge this paperwork in any way? (or has he since?)

If Ady sent it back to them with a signature, then I understand how they've screwed him.

If, however, there's no actual proof of receipt of said paperwork, or there hasn't been an acknowledgement of receipt of it from Ady, he will win if he contests it via the financial Ombudsman.