Once logged on to UPoint at upoint.aon.com, look for the “Need Help?” icon to ask any questions you may have. This virtual assistant can also connect you with a web chat representative and other helpful resources. You can also call the Aon HR Service Center at 1.855.625.5500 from 8:00 a.m. - 4:30 p.m. CT, Monday through Friday. Health Pros are also available to assist with tough issues like claims and billing disputes. Questions About Coverage? Start by contacting the insurance carrier directly. They know their coverage rules best. If you enrolled in a Bronze, Bronze Plus, or Silver medical coverage level, check out the HSA User's Guide (PDF) for additional contacts during the year.