IBM India — Regarding my offer process(as a fresher)

Hi,

I am Mavuru Suresh Reddy
cleared all the rounds of interview and informed that my joining is on may 16th.

I'am 2019, MTech graduate, when HR asked me about the gap after 2019, I submitted all the details I have

I have a pf statement, relieving letter, bank statement, and id card.
All the docs which I submitted were completely genuine. But the concerned recruiter is not satisfied with the documents. I am willing to undergo any sort of background check from IBM.

As I got a confirmation call from IBM, I even rejected the other company offer in my hand.