Default Voicemail notification on reboot

I use Google voice for my voicemail however on each reboot I receive a notification that I have 4 new voicemails in my sprint voicemail. I have called into my sprint voicemail to check this and it is not true. The notification is easily dismissed and doesn't return until the next system reboot so it isn't a very big deal. Still, it would be nice to ferret out this little glitch if possible. SPH-L720 running CM11.

Sent via mobile