Getting spammed by Pix/Flix Messages

[Calsonicgtr]

I've had an iPhone 5 on Verzion for over a year now, and I've never gotten any kind of message like this. Starting today, I've been getting these messages (with my name as the contact) that state the following.

"You've got a PIX or FLIX message! To see it, visit www.vzw.com/newpix-flix-message from an internet accessible computer and follow directions."

It keeps asking me to create some free account with Backup Assistant Plus. I added that to the plan, but it keeps giving me the same message. How do I access whatever these pictures are and how do I make it so Verizon stops spamming me with these texts?