droid 2 doesn't receive calls or messages

[addymom]

I have a droid 2 (but this same problem existed with my lg dare - which is why I purchased a new phone) if my phone sits unused for a long period of time my calls won't come in and neither will text or voice messages. if i unlock the screen to make a call or send a text i will start receiving text messages or notification of voice mails but no missed calls are indicated. Verizon swears its a faulty device, even though this was happening with my lg dare as well. Any ideas or suggestions??