Verizon voice mail getting hijacked to the same number for years
800notes.com
800notes.com
It basically forward spam call to that number. Maybe a bug or something happened when you deleted the app and the calls were still forwarding after the deletion.
From what Verizon told me, it seems like an app somehow enabled *72 - any call that came in when the line was already in use or went to voicemail was redirected to a Dakota number.
Dialing *73 disabled the forward and put things back to normal.