Different factors can impact the processing time of your refund, however, an IRS representative will be able to access your return and provide insight into why your return may be delaying. Please click here for IRS contact information. Some have been able to get through first thing in the morning when the phone lines open up, or much later in the day.
Also, please visit the IRS Tax Season Refund Frequently Asked Questions help article below for more information.
https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions