Originally Posted by
strikeIII Reset your voicemail back to the factory settings and uninstall Google Voice. You may need to contact your customer service for the voicemail number that is associated to your number. Once you get reverted back to stock access your voicemail and delete the pending message. Then reinstall Google Voice and go through the setup again and all should be good. This happens to me once in a while. If you've never setup your carrier voicemail you may have to ask customer service to also reset your password.
If you swap sim cards through multiple phones this can confuse Google Voice. At least this is what usually causes the issue for me.
I don't do the carrier integration, does that matter? I just forward my phone to Google voice. Google voice works, it's receiving my calls and voice mails, it's just that Phone services keeps showing that message. I can't swipe it away.