Unlocking u8100: problems

I tried to get unlock code(s) from http://www.instantunlockcodes.com/ but Steve there was unable to help in the end.

He apologised and initiated refund. Will update if that doesn't appear, but I'd use these guys again, given the choice.

And I'm having no success in finding algorythm for IMEI + MCCMNC -> unlock code.

Don't fail me now, Google!