I know how that goes.
Years ago, I was in the Air Force. One day, at work, the supervisor two steps above me on the chain of command called me into the break room for a little "chat". He told me that he had heard about "last night in the dorms." Apparently someone, or someones had told him that I had been causing trouble and making a scene, or some weird thing. I never did understand what he was talking about, or what, specifically, I was being accused of. He would just shake his head and say, "well, I shouldn't have to say it", as if it was too shameful for him to utter aloud. He wouldn't tell me who had complained, either. I tried to tell him that I had no idea what he was talking about, which was the truth, but being accused made me feel so nervous and upset, I could hardly talk. All I had done is sit in the dayroom and watch a little TV, listened to some records in my room (which I never did loudly, since I hate loud music), and then gone to bed. Just another dull evening. Our "chat" ended with him just looking at me sternly and saying, "I'd better not hear anymore about this kind of stuff, because I won't tolerate it." But he wouldn't even say specifically what it was he thought I had done! Decades later, I still wonder. Who pointed the finger at me? Why? What was I supposed to have done? From then on, every time I walked past someone in the dorm, I wondered if it had been them who tried to get me in trouble, but as far as I was aware, no one actually hated me. I didn't have friends, but I didn't have enemies either.
A similar thing happened at a job a few years later. I won't bother telling about it, because I think I wrote it once before, and it's more of the same. Another accusation that left me feeling hurt and confused.