From Microsoft Website:
If you are a textphone user (e.g. Minicom) please contact us on 0870 50 30 400 or via Typetalk.
Please note that our normal business hours are 08:00 to 18:00, Monday to Friday, excluding public holidays.
Calls will be charged at the standard national rate.
Is that anyhelp? I know the FE has in the past had contact with MS and indeed they may read this board so hopefully they will be able to suggest something.
Agree with you that those who are unable to use phone/internet do seem to face a problem.