Filed 2023 taxes in early April and still no refund spent 100 hours trying to get info from IRS. Only to be told that it's still processing. What do I do?

[1redhead2014]

They have sent notice cp05 a few times & LTR 4464C both say they don't need anything from me but they are holding my refund until they finish verifying my return.

[DoninGA]

You may want to contact a Taxpayer Advocate in your area.  See this IRS website for Taxpayer Advocate in your area and a toll free number - http://www.irs.gov/Advocate/Local-Taxpayer-Advocate