First Board Complaint

Hello, Today I got contacted by Department of Health in regards to a complain filed by a patient. The patient and guardian claims “I did not greet when I came in to the room”, which I did. The patient was rude and I did not provide treatment and told the parent and patient that i will not be tolerating disrespect. The mom is claiming that I just yelled and stormed out of the room. Is this something to be worried about? Never had a complaint before.

Thank you