Confused, been accused of being a scammer

Hello,
Im new here, but something is bugging me. For brevity, ill keep it moving. I was recently accused of being a scammer/mule. The person who accused me pulled it out of their butt and when i found out where the info came from i literally cracked up. MuGU. Seriously. Then i got angry. Seems the person was a newbie and as far as i know, they dont know what that is. Gr.
So my question is, has anyone had this happen to them? How did you deal.with it? Tbh i was very upset, and i kinda still am. Any thoughts would really help me out.
Tyvm!!
Honey smith