KzN

My droid deletes all my text messages randomly. I've had it for 2 1/2+ months and it has done it twice, leading me to believe that it happens every month, regularly, because it always happens at the beginning of the month. The last time it happened, I brought it to the Verizon store but all they do is blame the consumer for any faults with software because Android is open source. Is there a way to get my texts back and how can I solve this problem? Is there an app that deletes text messages every month or so because of a hidden setting? Is there a solution to this problem without reformatting (I have my contacts, calendar, and a bunch of other stuff on my phone and also apps and I don't wanna delete anything).