Capabilities of each person differs like each different fingers of our hand. And I believe Bpo sector is not at all a bad field to start someone's career from zero to scratch.
And rejecting post graduates without even asking why they choose to come for this particular interview are even more surprising. Really, that was so embarrassing just because you are a postgraduate and got rejected from the interview without even asking anything. Whether you are a diploma or postgraduate, you starts from zero.
I applied through a staffing agency. The process took 1 day. I interviewed at [24]7.ai
Interview
The process was very straightforward and to the point. The entire process is divided into 3 rounds. The first round is where you will introduce yourself and this is mainly to check your fluency with the English language.