Hello I am 4 months new to Iphone and I am enjoying it but I have a problem. I have 1000 text messages included in my package from AT&T and I am almost over the 1000 and I have like 10 days left before I start a new month. Can you tell me if there is a way I can stop the incoming messages before I go over and get charged I have the Iphone4. Thanks and Helppppp.