Accenture India — delay in offer letter release

Hi,
I had an interview with accenture on june25th and have cleared all rounds, submitted documents also. My cid is c8025150. My status says that i have cleared all rounds and my talent coach will reach out to discuss on next process. The status is same since 1month. I contacted her and she is asking me to wait as there are no opening as of now. If that is the case, then what is all this interview process for. Infact i received call on july 19 from one of the accenture hrs saying i was already tagged to a project and will receive offer letter in 2days which i didn't receive till now. I had discussion with my talent coach about the same and again she is saying that there are no openings. If there are no openings, why am i assigned to a project, why is the status still showing same.
If there is no need of resource then please tell us directly instead of hanging us in between. I was waiting for offer letter since the assurance of project allocation given by hr and turned down other interviews and offer. This is not expected from a company like accenture. Its highly disappointing. I request you to resolve this.