Cannot connect to Verizon HELP!!!

[Alex2128]

Ok, so everything was working fine and dandy until I flashed my phone back to the verizon stock rom from nfsfans 6.5 rom. And now nomatter which rom I use It cannot connect to data or even make a phone call! whenever I try to call it says welcome to Verizon Wireless, we are transfering your call to an operator and then it says something about calling cards! Also, it says I am constantly roaming. I have tried carrier porvisional cabs and nothing has worked!