Go to Settings>Apps, tap Menu>Show System, and see if there's a BadgeProvider app. If so, clear the cache/data from that app.
Hmm, weird. If you call into your voicemail system, is it telling you there are no new messages, and there are also no saved messages?
Not just clear cache .clear ,data/cache and force stopThe app that's reporting it is Phone App and I cleared cache for it. Would that mean it's getting reported from the server side?
Not just clear cache .clear ,data/cache and force stop
Also try using the stock launcher see if it goes away and turn badge notifications off then on againYes that's what I did to Google Fi, Phone, Nova launcher, and that other app. Cleared cache from recovery as well now. Will test later
Also try using the stock launcher see if it goes away and turn badge notifications off then on again