Google gets 34000 searches per second. Youtube gets over 2 billion views per day. No organisation, however big, can afford the staffing to respond to every possible question which might be raised by such massive internet activity. So only certain issues can be addressed, such as those of commercial benefit to the companies or of immediate personal concern (e.g.internet harassment) to individuals.
If you've got a problem relating to a video on Youtube, your contact point is via this page:
http://support.google...t_type=abuse&hl=en-US
Otherwise please tell us (in general terms) why you need to contact Google and/or Youtube and we'll try to point you in the appropriate direction.
Chris