How do you block calls on a blackberry curve?

My blackberry curve won't let me make phone calls?

• I have a blackberry curve 9300. It won't let me make phone calls. Not sure if it is allowing phone calls to come in either. I have had this phone for almost 2 years. Wireless connections are on. Yesterday I was noticing that it wouldn't send all my texts either. Only some of them. When I go to make a phone call, it will just saying calling, but never "connected" and no timer. it will say call failed, please try again. I can't find anywhere on my phone where I can fix the issue. I have sprint.

• Answer:

  Take the battery out of the phone for about 60 seconds. Replace battery and see if the problem still happens, after the phone has re-booted. If it does, time to call Sprint to have them trouble shoot the problem and either help you get it fixed or replaced.