Service goes out

[bradb311]

I have had my Droid X since the day after it came out. I work in a building and have had service up until today. When im just looking at the phone it says I have full service and 3g is fine, I can use all data apps and get on the internet but when I go to make a phone call it all of a sudden goes to no service (0 bars) and when I hang up it goes back to full service. Any body have same issues or know how to fix? I called and did the 228 deal and it didnt work.