Tax Year Prior to 2020: Received 1099-MISC in addition to W2

Wife worked at a bank for a couple months as a customer service rep and received a W2 from her employer but also received a 1099-MISC. She called them multiple times to find out why but now one there seems to know why or for what reason she received a 1099-MISC. How am I supposed to describe this when filling out the questions for the Schedule C since she was a bank employee and not a contractor?