Hello aspirant,

The JD Birla Institute will be a good option for pursuing M.COM. it is not affiliated to the Calcutta University, it is affiliated to the Jadhavpur University. It will be a course of 4 semesters, including a 8 week internship in the laast semester. 

Another good option will be the St. Xavier's college, Kolkata. Although very new, the quality of education is quite good. You'll get lots of exposure from opportunities like summer internships. 

All the best!