It is correct that Sky cannot open your account before you have verified your age through the post ident verification method.
You should contact one of the Mods per private message and write your request to initiate this method to her/him in english.
They should understand your request and act accordingly.
If you want to wait until a mod is answering in this thread, it could take 7-10 days!
It is a shame that nobody was able at the hotline to help you in english!