Wants to help me take on IRS

I got 2 phone calls from this number one at 11:33 pm PDT and then another one at 12:29 am PDT...not cool, I am supposed to be on the "do not call" list too, I do not have any tax liens and did not appreciate being woken up to this message

they called twice last night, 10:53PM and 11:36PM; there was no way to talk to anyone without leaving my name and phone number; I called and asked them to put me on the do not call list, hope that was not a mistake; I also called and tried to talk to someone, again no way without leaving my name and phone number

Called at 10:30 PM, 12:01 AM and then I finally woke up fully enough to answer when they called again at 12:02 AM.  A recorded message told me they were from the "Tax Renegotiation Center".  Infuriating that these crooks not only get around the Do Not Call Registry, but are allowed to harass people at any time of the night.

I also got a call last night from this number- it woke me up at 11:15PM - they left a message- then it called back at 12:45 AM and woke me up again!! I called the number this morning and pushed the "2" for stopping the calls- there's also supposedly an option to file complaints!! My brother and sister also both received calls from this number late last night- so frustrating!!!