Accenture Software Developer Engineer interview questions

Contacted by consultancy firm to forward my profile to Accenture, hence technical round is scheduled. I have cleared 3 rounds taken by Accenture team, in which the third round was happened twice, just because there is no co-ordination between Accenture HRs. One person is dealt by more than 3-4 HRs, with no communication between them. Last round of interview happened in April, and after its completion, accenture didn't updated anything about whether I cleared the round or not. I got update once on telephone that now I am in offer stage but they're looking for immediate joinees, which I already told them in beginning that my notice period is 3 months and i cannot join immediately. I have been updated by consultancy (Sourceone) that I am in "Offer Pending" status. Few days back, I've been told by consultancy that they don't have opening in Gurgaon location, hence I opted for Pune one. Now after 2-3 weeks, I contacted directly to one of Accenture HR, and got the reply that as of now they don't have openings matching with my profile. If they don't have then why did they wasted my time. After selecting and confirming my status as "Offer Pending", they neither updated me, nor contacted me, and now postponing offer. it's already completing 5 months now.