Within my Not Assigned group contacts I have one contact is listed 5398 time. I have tired everything. Tech said it was a bug. Recommended a Factory Reset. At this point, I'd rather live with it and not start all over again on a phone that maybe has a couple years left. Didn't know if there are others that have had this issue or if anyone has ideas. The way it sounded, the Factory Reset was try a "try this" and see if it works.
I removed the 5000+ contacts, cleared cache and data multiple times while deleting. So far the contacts have not reappeared. If they do, I'll keep repeating the same process vs factory reset. I could not find a way to delete the Contact app.