Isn't that the case with basically every support request, no matter the company or severity? The first couple of emails from 1st & even 2nd level support are mostly about answering the same questions about the environment over and over again. We've had this ping-pong situation with production outages (which we eventually analysed and worked around by ourselves) and fairly small issues like requesting more information of an undocumented behavior which didn't even effect us much. No matter how important or urgent the initial issue was, eventually most requests end up being closed unresolved.