Its a worst interview process, I have gone through 3rounds, 2 technical rounds with India panel and 1 technical with US round as well and cleared them all, whole of this process took 3weeks. My final round with hiring manager has been scheduled a week later saying non availability of hiring manager, the next day I got a call saying a candidate has been selected by the manger and they are dropping my profile. So they are just wasting time of the candidate and losing reputation as well. This is an unprofessional behavior or practice from the organization.