1-800-829-1040 is the main IRS phone number with live support. Please click the IRS link below and scroll to bottom for more contact options.
https://www.irs.gov/help/telephone-assistance
Customer service representatives are available to speak with Monday through Friday, 7 a.m. to 7 p.m. local time unless otherwise noted. Residents of Alaska and Hawaii should follow Pacific time. Puerto Rico phone lines are open 8 a.m. to 8 p.m. local time.
https://www.irs.gov/help/contact-your-local-irs-office Contact your local IRS office and/or make an appointment.