I filed my 2020 taxes in February 2021. Around June the IRS asked for another form verifying my income which I provided. I still did not received my refund (~$6,500).

[xmasbaby0]

TurboTax does not get any information at all from the IRS after you file your tax return.  No one at TurboTax knows what the IRS is doing with your return.   Only the IRS can tell you what is happening with your refund.

To call the IRS:IRS:  800-829-1040  hours 7 AM - 7 PM local time Mon-Fri

Listen to each menu before making the selection.

First choose your language. Press 1 for English.

Then do NOT choose the first choice re: "Refund", or it will send you to an automated phone line.

Instead, press 2 for "personal income tax".

Then press 1 for "form, tax history, or payment".  

Then press 3 "for all other questions."

Then press 2 "for all other questions."  It should then transfer you to an agent.

TAX ADVOCATE

At the following IRS website, find the USA map and click on your state, and it will give you the number of your area's IRS Taxpayer Advocate.

http://www.irs.gov/uac/Contact-a-Local-Taxpayer-Advocate

Also see this article for more info on how the Taxpayer Advocate Service works::
http://www.irs.gov/taxtopics/tc104.html

[fanfare]

There is no point to calling.

They will just tell you there is a huge backlog.

Millions of filers are still waiting.

IRS says:

"Do not call the IRS".