The pin number your referring to could well be a MESH serial number - required for existing customers only, to access their order.
As this is a sales based enquiry - select 'option 1' on the number supplied on the site - and you'll get straight through for your sales based enquiry.
I just tried - and got through is less the 10 secs.
If you prefer not to try gain, please tell me the notebook you were looking for and I’ll check to see if it’s in the showroom.
As I say, definitely no pin required.
Best Regards – Nick