How do i contact prometric customer support? While 800-775-3926 is Prometric's best toll-free number, there are 8 total ways to get in touch with them. The next best way to talk to their customer support team, according to other Prometric customers, is by calling their 800-306-3926 phone number for their Reschedule Appointment department.How do i reschedule an appointment with prometric? The next best way to talk to their customer support team, according to other Prometric customers, is by calling their 800-306-3926 phone number for their Reschedule Appointment department.How many phone numbers does prometric have? In total, Prometric has 5 phone numbers. It's not always clear what is the best way to talk to Prometric representatives, so we started compiling this information built from suggestions from the customer community. Please keep sharing your experiences so we can continue to improve this free resource.Does gethuman work with prometrics customer support? GetHuman does not work directly with Prometric's customer support operations. GetHuman works with customers everywhere to compile the best tips and tools for reaching call centers faster and solving common customer problems effectively. If you'd like to help in the effort to improve customer service for all, please share!