The views expressed in this post are my own personal (HRA protected) views, and are not representative of any organisation I have any involvement with.
I have looked all over their website and it seems as though Bookcert are only available through email. According to their site they have a 24 hour response guarantee from Monday to Friday so that may be your best bet.
I also found this thread on here bookcert which seems to suggest email is the only way to go.
The views expressed in this post are my own personal (HRA protected) views, and are not representative of any organisation I have any involvement with.