I still have not received my refund for my 2023 taxes. I was asked for and provided additional documentation in October of last year. How can I contact them?

Call the IRS: 1-800-829-1040 hours 7 AM - 7 PM local time Monday-Friday
When calling the IRS do NOT choose the first option re: "Refund", or it will send you to an automated phone line.
So after first choosing your language, then do NOT choose Option 1 (refund info). Choose option 2 for "personal income tax" instead.
Then press 1 for "form, tax history, or payment".
Then press 3 "for all other questions."
Then press 2 "for all other questions."
- When it asks you to enter your SSN or EIN to access your account information, don't enter anything.
- After it asks twice, you will get another menu.

Press 2 for personal or individual tax questions.
Then press 3 for all other inquiries
It should then transfer you to an agent.

Check the status of your 2023 refund at the IRS site Where's My Refund?

If nothing is showing there, you can reach out to the phone number on the letter you received to provide your additional documentation.

If you mailed documentation by certified mail, you can also verify that it was received by the tracking number on your USPS receipt.

@gemslaugh