How do you block calls on a blackberry curve?

Blackberry Curve will not receieve/send calls or texts?

• I have a second hand Blackberry Curve 8250 which is locked to o2, i have been using it fine for around one week, but yesterday it randomly wouldn't let me make or receive calls or texts, however i can use the Internet, emails and bbm etc.. when i try to ring anyone it instantly says call failed. I ran a diagnostics test and it says: Radio Data Activation: Yes Signal Level: -71 dBm Network: O2 - UK IP Address: 10.205.80.209 ICMP Ping Echo: Yes BlackBerry Registration: Yes Connected to Blackberry: No BlackBerry PIN-PIN: Abort however this morning that part read: BlackBerry Registartion: Yes Connected to Blackberry: Yes BlackBerry PIN-PIN: Yes

• Answer:

  try taking it to your nearest o2 store or a mobile repair store and they should be able to advise or help you out