Having the very same problem as JillaWright, and seeing the one  the reply I thought my problem at last could be resolved. WRONG!

After duly going through the steps ie telephoning the UK number as given and then after 14 minutes at £0:14 / min only to be told they could not locate my account (which I have had for some 8 years) and I should then contact Support@Microsoft to assist.

Having then gone down this route to no avail. I am now resolved to the fact that the Customer Service from Microsoft is abysmal and it would be better to find another provider.