When you contact sprint, tell them to transfer you to a blackberry technician. Regular reps won't do much, but you have to call at a certain time... I think they close 8pm central time I think. If the curve has been under 30 days, I would go back to the store you bought it from and get it exchanged.

Blackberrys are notorious for weird problems. My blackberry had a problem where it would delete my texts and phonecalls, but after I uninstalled two apps, took out the battery and put it back in, it worked perfectly fine afterwards.

It's most likely his blackberry problem, not your Verizon phone. Worse comes to worse tell then you want to cancel after you run out of options... then they will give you more options

Hope this helps.