Flashed phone many times, now can't authenticate phone?

[NCX Designs]

Ok, i never had this happen after all the ROM flashing i've done until now

everytime i go to make a call, it keeps sending me to Verizon external operator where it says "please wait while we connect your call to the nearest Verizon external operator, where you will be able to complete your call with a calling card or creditcard"

I did a hard reset and i'm using the MightyROM WAR rom... and i even did the provisioning that i always did ....

Edit: now it says after a couple of hard resets.... that "we're sorry, were unable to authenticate your phone"
Update: Ok, i'm getting paranoid now, i ended up dialing #8899 like it told me to, and the rep sent out a "security" update to the phone which now it finally works. Can anyone please tell me what is going on ?

can anyone tell me why this might have happened? and what i can do in the future to prevent this?