Getting direct messages

[Pangugu]

Hi. me and my class mates getting direct messages from someone who's using our names during class. one time one of my class mate received direct message from someone who used my name. it's not me who sent DM to her and there's no one with the same name as me in the class. and today several people received rude message from another person ( i will use fake name for that person "Carol"). She sent really rude DM to several people. The actual Carol who's in a class didn't send that DM. Most of us received the same message at the same time. Is it possible someone who's in our class is using our name? Every time we received that kind of DM we checked people who's in the zoom meeting and only the real person is in the meeting. and we can't reply to that person who's using our names. That happened to anyone?