~ seeeeeriously. Speak to them! Either the person complaining or your employer has absolutely bungled this in my personal opinion. (If you feel unsure of yourself, remember the phone comparison.) Don't stand for this crap <3

~Are claiming that you 'deleted' a page (the grounds for complaint), are they confirming that they have gone through what was clearly a personal item without permission. This is (at minimum) out of order and potentially worse than that. Since you say somewhere else about being part of a union then ~

Additionally, you do have certain rights to privacy among your personal possessions. Imagine if this comic had been your phone instead and you had it out during work hours (against the rules) - would they then have the right to look through your phone? Absolutely not! Since they - (next)

Occam's Razor - They haven't seen shit. Someone (probably the person you've supposedly written crap about) completely made it up, knows you do a comic, and invented the story about it being in the comic to get it taken seriously. You can truthfully deny, so do so and ask for the evidence

Oh I know this mood so baaaaad XD What game?