So I filed an extension for my taxes and I am doing them now and I paid for my state through a credit card and need to know how I can refund that? Can anyone help me????

I need to refund the amount I paid on my credit card back to the IRS bc I lost my job two days ago and can't really afford paying my credit card off at this time. The customer service sucks through turbotax. They say they are open Monday -Sunday 5am-5pm and I woke up at 7am to speak to them and they aren't even available.