What number do you call to fix messaging on a Verizon Wireless phone?

I can send messages from my AT&T phone to my boyfriend's Verizon phone, but his phone won't send messages to me. It's definitely a problem with his phone, because I can recieve messages from other Verizon phones. We've not had any problems with this before. He says he thinks there is a number you can call to remedy it, but he can't remember it.

Thanks for the help!

Call Verizon Customer Service. Their number is 1-800-256-4646. They're surprisingly very helpful.

I know Verizons number to be 1-800-922-0204