Calling my Phone - Verizon says "Not in service or change."

[zebrajeb]

Hard to put it in the title. I've been using Google Voice and it was getting voicemails for call made to my cell phone. Noticed the "voicemail button" on the Droid dialer went to Verizon instead of GV. So, I tried fixing it and did so. Now, however, any calls made to my Verizon cell phone number get an intercept that says "number has been changed or no longer in service" instead of going to GV. What did I do wrong? How do I fix it?

Thanks

John