Capgemini — Not processing offer letter

Address:	Pune
Website:	www.capgemini.com

I have attended interview for "UI Angular" position and the next day I received call form HR for the salary discussion. I received an email for submitting the required documents on Dec 14, 2021 and to this day I am trying to reach through phone call and emails though I never got any response through call, she mentioned over email that the BU Approval is pending, and somehow when I called today she received and told me that we are not processing your candidature without any reason.

How can a reputated company like Capgemini can treat candidates this was and after all the process just say they are not taking it forward?