How do you block calls on a blackberry curve?

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...

My blackberry curve was working fine for 3-4 weeks, then all of a sudden it wont send, recieve text or calls or make calls aka its become a ipod with awful memory.

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...

Hi, since today my BB wont receive any phone calls or text messages. I can make calls and send texts and blackberry messenger, the internet etc is all working fine but I can't receive any calls or texts and I don't know why Anybody have any idea?! Answers...

i have a blackberry curve and i have no idea what applications use internet or not and i looked at the "pocket express" application and it didnt ask me "access the ...show more

when i look at the phone it has a chip piece next to were headphones go blackberry curve volume goes up and down while talking by it self when talking the person on the other line cant hear me /and all i get is static i hear their voice but don't understand...