Colleges in Mumbai

You can do this diploma as you are eligible for this college. You can also apply for the entrance exam. Read the following page and know more about admission process:
https://www.shiksha.com/banking-finance-insurance/course/diploma-in-banking-and-finance-indian-institute-of-banking-and-finance-kurla-west-mumbai-2054

The average package is 7.28 lakh per annum and maximum salary 12.49 lakh per annum.

Greetings,
The college timing for MMS first year is 8.30 AM to 6.30 PM every day.
The college is, generally, of 6 days a week (Monday to Saturday).
You might have to come to college on Sundays as well if there is a guest or an important lecture.

Read reviews in the link. They seem to be giving an indication that placements are actually good.
https://www.shiksha.com/mba/course/masters-in-management-studies-met-institute-of-management-bandra-west-mumbai-191610.
As others have told already, MMS Operation is a pretty new and specialized course. There may not be much demand in the industry at present compared to others. But if the placement is good then it will very beneficial in future.

Kindly visit the link mentioned below:
https://www.shiksha.com/science/ranking/top-science-colleges-in-Mumbai-all/101-2-0-10224-0.

Kindly visit this link:
https://www.shiksha.com/mba/ranking/top-mba-colleges-in-Mumbai-all/2-2-0-10224-0.

Eligibility Criteria:
Candidate must have passed Diploma/ Graduation from a recognized board/ college/ university.
Or
Candidate must have passed 10+2 from a recognized board and must have 2 years of working experience.
Or
Candidate must have secured a minimum of 60% marks in Fire and Safety 6 months course (only for students studying under Continuing Education Program of Government Polytechnic, Mumbai).
So, for admission, you can directly apply to the college.

There is no PG course here. I would suggest you look for other colleges. Perhaps Bhatkhande or some other. But this college only provides short-term certification courses.

Placement is given on the basis of skill and not on the basis of marks. However, the interviewer may at some point during the interview ask about your low grades, at the moment he is not specifically looking for your reason but rather your response. So, react positively and give a good reason. He will be satisfied.