My mother was visiting her father today and as she...

My mother was visiting her father today and as she was leaving she encountered a nurse who she believed just started the evening shift my mother let her know that her father was ringing for oxygen the nurse was rude and dismissive and never even acknowledged my mother's presence..my grandfather has been in your care for three days and he has a couple of weeks of rehabilitation in your facility...is this unprofessional behavior is what is acceptable at this facility or was it hopefully just an employee having a bad day