Hey Sirish , mass communication and media is a course which not only depends on your academics but out of classroom learning also has a role to play , few good colleges in mumbai for the same are
1.  Indian school of media
2.School of broadcasting and communication
3.Xavier institute of communication
4.Kc college of management studies
5.School of broadcasting and communication
Apart from that getting associated with various media agencies also helps in building a string career .
I hope this helps. All the very best for your future endeavors .