Got admits from IIMA PGPX, IIM Bangalore EPGP, and IIM Calcutta PGPEX. Which one should I go for (I'm really confused about the placements, no clarity whatsoever)?

Your selection should be based on your profile, such as your work experience, industry, and, most importantly, what you hope to gain from the program. If you have 4-5 years of work experience, you can look at EPGP because they have gone through ISB and have capped the work experience of the candidates they accept.

The age range for IIMA is 5-20 years, so the learning will be unparalleled in terms of class discussions and peer group learning. If I recall correctly, IIM Calcutta has a lower batch strength, and the batch is slightly on the higher side of work experience.

Placements are good at all institutes, and your previous industry experience is important. This is something you cannot change and should accept, but you can look at how candidates in that sector have performed over time.

In terms of learning, you'll not find the variety you'll find at PGPX anywhere else. Make contact with both alumni and current students. Make an informed decision based on your motivation for enrolling in the program.