Guest audio missing - 2hrs of 2 guests audio & video - only my feed survived

My issue is much worse than I realised. 

I am missing 2hrs audio and video from both my guests. One from California, one from UK. I was UK based too. 

After 2hrs the recording fell over. We spotted it immediately and restarted. We ran for another 20mins. I have my audio & video for the first 2hrs and everyone’s audio & video for the final 20mins. I AM MISSING 2 HOURS OF AUDIO AND VIDEO FROM BOTH GUESTS FEED.

What can I do here? How do I get it back? Or am I just screwed?

After being a big fan of the simplicity of Adobe Podcasting I am reviewing my position. This is unacceptable and a deal breaker. If I am unable to recover this data I will not be able to use Adobe Podcasting for recording again.