OneDrive - Mass File Deletion by OneDrive

I noticed in late July/early August that files in my OneDrive folders suddenly vanished. More than 25 years' worth data gone.  Close to 300 GB of both personal and business data.  Only the files were gone.  The folders and file structure remained untouched.  My OneDrive space is 2 TB.  The Recycle Bin was empty.  My OneDrive account has been active since OneDrive started and remains so without interruption.

Through the forum community I learned that I am not alone with my frustrations.  Microsoft Support scheduled a telephone call.  The gentleman who called was rude.  He said the only way files were deleted was by the user (i.e., me).  That suggestion is ridiculous as it suggests I went into hundreds of individual folders and subfolders to delete files but leave the folder structure intact.  The gentleman said there was no way OneDrive or Microsoft could cause that to happen.  News flash.  It wasn't just me.

I later submitted a request for assistance by messaging OneDrive Support asking my issue to be escalated to the OneDrive Engineering Team for a One-Time Data Restoration (OTDR).  I'm still waiting for a response or even as much as an acknowledgement of my support request.

Does anyone else recognize this issue?  What other ideas have others tried that worked to fix the problem?  Any ideas on how I get my files back?