Bad Customer Serivce

I have had my two appointments cancelled after scheduling months in advance because apparently the Hygienist keeps coming up with emergencies. When I called there to ask for my son to be seen during the weekday, the man who picked up the phone was so rude and condescending asking me repeatedly if I understood what he was telling me as I couldn’t comprehend English. I have been taking my child here for a long time but will now find him another dental. I will not be putting up with such disrespect especially since I am paying for the services. I will also be taking the two families I recommended to this place with me.