Work-related calls should never be made anytime when normal people are sleeping, unless it’s a major emergency. Seeing as you only called once and didn’t even bother leaving a voice mail, it seems to me, it wasn’t much of an emergency. So … what the hell is your problem?! You consistently call at hours when normal people are no longer talking work on the phone … in fact, when a lot of normal people aren’t even awake. It sucks that you apparently don’t have a life and never sleep, but there are those of us out here who do. Get a grip and do work during normal working hours, please, or at least don’t pester others by calling in the middle of the night!
Going back to bed now.