Different service for different race

I had last cleaned my teeth with Christo Brecher Ing/Inc dental surgeon in 2019. The dental hygienist was Catherine. The cleaning procedure/process was so painful that I asked her to apply anesthetic as to escape the pain. 18 August 2022 had appointment with Christo Brecher Ing/Inc dental surgeon for check up and cleaning. Doctor asked why I took so long to book appointment. I explained my previously painful experience with the dental hygienist Catherine. Doctor said lets go and talk to her about this. Catherine said she not the only one who should take blame. She said I cancelled the appointments, I do not brush and floss properly and that is the reason I experiencing pain. So I requested to be assisted by other hygienist. She told that she is the only. I requested to speak to the doctor, Catherine came back and told me that the Doctor said you can if want. Then I left.

19 August 2022. I asked my white colleague (who referred me to this dental surgeon) who normal cleaned his teeth. He said it a white hygienist. My concern is that the Doctor was not interested in my pain experience and was not willing to assist me.