Clinique Dentaire Pie-Ix

First visit to the office. Appointment 10h for a basic cleaning. 9h30 completed the medical history form. 11h30 cleaning with dental hygienist. Dentist had time to fix a cavity. Now have sensitivity in the tooth, did not have sensitivity before. 2h finish at the office. Total 5.5 hours and paid $410. Try calling for new appointment. No answer and no response to messages.