Cognizant Salesforce Developer interview questions

The interview had 3 rounds. First rounds was with the HR. Second rounds was a technical interview with one of the senior developers from the company. Third and final round was with a project manager.

I was referred to cognizant through a consultancy. My first round of interview was immediate and telephonic. after 4 days they confirmed that I've cleared first round. they scheduled second round after 2 days but no interviewer joined the call. they rescheduled the second round again through consultancy but never sent any invitation for it. And after that they never took any interview. Maybe because it was through consultancy. because I was continuously getting calls from cognizant for starting the process again but I declined. it was such a waste of time.