finally

I didn't get a new sim card...When i went to the digi outlet at my place, i was told that i couldn't change a new sim card as it was not register under my name,, even though i had authorization letter...I only can change it if the card was register under a company...Imagine how mad i was when they told me this... Different info from digi hotline and digi outlet...

I tried to give them one more chance by calling again the customer service...finally someone from gave me an useful tips...
http://support.apple.com/kb/ts4148
back up and restore iphone from iTunes...so far it works for me:)