PARTY RAISED ANOTHER INVOICE WITH OTHER INVOUCE NO.

Ayush Jaiswal (28 Points)

19 January 2021  
I made a purchase from BSNL in September 2020 they gave me the invoice that time of Sep 2020 and we took the invoice and from that we generated e-way bill and took the input also.Now the party is telling that was wrong Invoice and raised a new Invoice on Dec 2020.
What should I do now,it's a government company.