The usual way of for obtaining help is outlined here:
http://www.libreoffice.org/get-help/
You do not mention exactly what type of support that you require...
but I don't think that in general you can obtain a support contract
from a "community" of voluntee
Libre Office Team,
We [Staples] plan to use the LibreOffice for generating PDF's.
Can you please let us know if you can support in case of any issues with
LibreOffice?
Let us know whom to contact in case of issues? If you provide a contact number,
we would like to discuss with you on support m