Accenture Custom Software Engineer interview questions

1st round mcq 1 hour 50 que on sql. 2nd round python interview 30-40 min (technical). then document collection and when i was submitting the documents in the afternoon, i got the email offer has been revoked . really what is going on don't know . totally the waste of time and efforts and later sent an email to hr and their other teams but they didn't responded be back. they have done same thing with many people u can find that on reddit, quora etc. don't resign from your company till their hr gives you in written over the email that offer if final and they will not revoke it.