Unethical standards of a doctor

We made an appointment with her in November 2020 for 21 January 20121. Two days before our appointment we received a call from their admin asking which doctor referred us. I replied, we are private, we know which specialist we need and no one referred. And suddenly our appointment declined..... Two days to go and after waiting 3 months..... WHY. It is my health, my money. We are educated people we know the differences between specialists, who does what... She is Rheumatologist... But Now I am not sure what type of Dr She is, and what oath did she take when finished the school. I hope a prospective patients reads that and find themselves a doctor who holds the Hippocratic Oath to uphold specific ethical standards. And do not attend to above mentioned doctor who can drop you 2 days prior to your appointment done by them.