Phone code for MYX-6

I have bought an MYX6 from a local trader boxed and with a new sim card. It seems it must have been pre owned. I have registered it with Orange, but when I turn it on it asks for the phone code. I have tried 0000 and 1234 and taken it into the local Orange shop but they can't help. They think the number has been changed from the default. Sagem are not open weekends. Is there a simple way to reset to the default for the uk, or to find the code?

Any help appreciated
regards

66pingu