Accenture India — Completed all rounds no offer letter no confirmation

My CID C9564250. I was selected to PCS position on 29th of June and I have uploaded all document as per guidelines from documentation team. I was continuously tried to reach out someone from Hr team from past few days for an update regarding my offer letter but I didn't get any update or acknowledgement till now. I was having another offer in hand and now I have rejected that offer and was anticipating offer letter from Accenture since HR who called me assured that I will be getting an offer. Two days back my status suddenly changed as we are foreseeing some delay. Then after escalating today it was again changed to interviewing but already I have completed all levels. And they have changed the talent poc today but as checked she is not a part of Accenture now.I have given a poc who already left Accenture.