I got a Nokia 7650 as an Orange contract phone a few months ago, I then got it unlocked and having been using a Vodafone sim card in it. I now have a problem with the phone in that I can't make calls on it. I can send and receive msgs on it but I can't make or receive calls. If I took it to my local NSC will they still fix it for me or will they tell me to go to Orange, which I don't want to do cuz I've had it unlocked.

The NSC will probably fix it! Dont mention it is unlocked and good luck! They dont usually send the phones to the operators, its the other way around!

Is there a list of NSCs anywhere cuz I'm not sure where my nearest one is. I've tried searching the forums but I get about 2000 results. Can anyone help me?

Go to club nokia web site and log in! There you can find your nearest NSC!