Hi Bri,
Me personally, I've always requested my reports a few days after, and never had any trouble. I think if I was in your shoes, as time-taking as it is, ring back daily and keep asking them until they tell you it's ready.
I couldn't imagine why an HCP wouldn't submit a report, unless something has happened to them in the middle of writing it, and it's interfered with it before it's been submitted.
One of the more experienced mods may be able to clarify better, or like you mentioned, other claimants who may have experienced similar.
Hope this helps,
Regards, Chris.
Nothing on this board constitutes legal advice - always consult a professional about specific problems