Who knows could go either way.
I kind of hear people saying stuff when I'm really down if I'm in a busy place. I think my brain misinterprets the noise into words like "ew look at her" or people laughing at me etc.
MaKes me sound a bit paranoid really. It's all a bit of a spectrum I think, and hearing the odd thing like your name and hello etc is totally normal. From memory I think the stat is 40% of ppl hear stuff?? Can't remember.
Or perhaps some person was haing a great time messing with you