they donot want to receive anything can be traced for their income.
That can be seen as you aiding and abetting them in violation of tax law. I suggest two things.
1) They provide you a completed W-9 so that you can legitimately report what you pay them as a valid rental expense. You can print a blank W-9 at https://www.irs.gov/pub/irs-pdf/fw9.pdf and have them fill it out completely. They are required by law to provide you with their SSN or ITIN for the 1099-NEC you would be required to issue them since you pay them more than $600 a year, and a valid mailing address for you to send the 1099-NEC to.
2) They sign a document of receipt each and every time you pay them, for the amount you pay them.
If they will not comply with both items above, then you should terminate their services immediately.
