At this point, I suggest you first defocus your stress on the new job—it looks like the present company is out to hook you for whatever reasons. Unless you defocus on the new job, your thought process on the subsequent steps will be affected. The worst-case scenario is that you will miss this chance, right? If that's what's to happen, so be it. Just remember that everything happens for our good, even though while we are going through the situations, it's tough to believe this.
Did you talk to the new company's HR team for an extension of joining? If not, please talk to them ASAP.
Also, please confirm if anyone, even colleagues, in the present company knows the name of the new company. If yes, please be mentally prepared to face some anxious times with the new company when you ask for an extension. There is a possibility that your present HR could have passed adverse remarks to them. Since you would also need to indicate the timeframe of the extension, maybe you can ask for a couple of weeks.
Interaction with the Insurance Company
Please confirm if you have the processed claim copy with you. If not, I suggest asking for at least an informal copy—use it to handle the HR of your present company and for any later legal use.
Legal Steps
At least now, take steps to go legal. Please note that this doesn't and needn't mean that you will go the whole hog in this direction—frankly, it's tough to go the whole way, knowing our court process timeframes. But once you indicate to the present company that you are prepared to go legal, their responses should change. Also, as I indicated earlier, tell your lawyer to get court orders/notice rather than a lawyer notice. And also drop enough hints to your colleagues (not HR) that maybe the media needs to be told of how things happen here—the news is sure to reach HR.
Please mail your resume to me at: [Email Removed For Privacy Reasons]
All the Best.
Regards,
TS