I'm making payments to the IRS but are not able to make next coming payment that's in a few days. Is there a direct number to speak to someone about this?

Yes, you can speak to an IRS agent about postponing your payment date. According to the IRS, taxpayers should call 844-545-5640 to reach out to an IRS representative that can help you with your payment issue. If you are making payments on an installment agreement then you may be able to revise your current payment plan online at this IRS link.