Diploma

Dear Gautam Baliga,
To pursue MBA programme, you should have any degree as the qualification. Without that, you cannot join MBA. Even you got some work experience.
All the best.

Each country has got its own validations with respect to educational qualifications. I do not know about the institute you are referring but in general, Diploma courses offered in India cater to the Indian scenario where many of the employers are keen about the skills and not about any certification

Himani,
LPU is one of the best universities of India that has made it possible for all to fulfill their dream of good education. LPU has become a brand name in the field of education. It has been ranked as one of the best universities by various agencies on the basis of its infrastructure, its place

I would certainly name UEM, Kolkata best suited to your need and has good consistent placement record. Visit https://www.shiksha.com/university/university-of-engineering-and-management-kolkata-47398 to know deep about its courses too.

Diploma holders are not eligible to seek admission in MBA degree course till they complete any graduation degree from a recognised university or institute.