A Microsoft file hosting and synchronization service.
Restore your entire OneDrive to a more recent time when it was correct. Do not empty the recycle bin at onedrive.com.
Use Files On-Demand to free up OneDrive space on devices you use infrequently. Outdated files on seldom-used devices are often the culprit in cases like this. They have been known to inadvertently overwrite your more recent files
https://www.youtube.com/watch?v=UzIA9uykIhE&t=43s
You should be able to schedule a callback from Microsoft support by going here and explaining your problem.
Call-in phone numbers are only available with business support.