Been searching the Web with no luck.
Using a BlackBerry keyone. Recently noticed device running sluggish so checked state of the phone. Found over 900 entries of the carrier Sim card contacts duplicated in contacts. Deleted them all and every few minutes it adds another set of the same 5 numbers. (Client care 611, directory Assistance 411, Taxi, etc.) If I leave it over night I'll wake up with over 100 entries. The longer I go the more entries I have. I can't find the service that copies these contacts over . It's killing me.
I reset my phone to factory default, uninstalled all apps, removed permissions to contacts from every app and it still continues. I'm at a loss and nobody seems to have experienced the same.