ITC Unmatched with GSTR-2B and Huge Demand Notice Issued

For The Month of JANUARY - 2021 ----

Our ITC Unmatched with GSTR-2B --- of Rs. 575000/- -----

Due to Some Invoices are not  yet uploaded at  GSTR-1 by  Supplier ----

Supplier confirmed that He will upload the same within 2 days

Today  GST Superintendent  came and verified ----

Issue a Demand Notice Rs. 575000/- with Interest  and directed us we have to deposit 

this amount tomorrow

Question :  This is Justified ???? What is GST Rule ?

please reply