I'm really new to Verizon. I just got my iPhone 4 and a 2-year contract of 450 mins monthly calling + unlimited data plan last week. My question is: if I get messages from Verizon for letting me know how many mins I have left, do I get charged for the message I received? I started getting weird message from number "353-38", can I put a block on this number? or can I block all the messages come to my cell? I really don't like to get charged on text messages. Thank you!