My blade is "country" locked or what?

[Guest kogos]

I bought a Blade in Greece, and i'm very happy with it for about 2 years now. I moved to Turkey for work and bought a Turkish Turkcell prepaid card, to get in touch with the turkish guys i work with in Turkey. The problem is that when i try to make a call to a turkish mobile phone, using my new turkish prepaid sim card, i get a voice message: Sorry, prepaid customers can't call this number". BUT, if i use the turkish country code +90, i can make any call to turkish numbers.

Since it's a local turkish sim card, calling another local turkish number, there shouldn't be any prefix needed. How can i resolve this?

P.S.:i also called turkcell and they told me to set network settings on manual, and choose turkcell network. I did that, but it didn't work

Edited November 6, 2012 by kogos