What is a supplementary report? How long does it take to get this report?

I’m in the process of buying a house. I had to give 2 alternative credits(light and phone bill) payment history. Now they’re saying they’re waiting on this supplementary report. If I gave the payment why do they need this. I’m supposed to close on Friday at 1pm.
Update: They want them report to the credit bureaus and the companies are saying they dont do that. Is there another way around? This is a VA loan
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