As he wants to do PGDM Diploma Course so he must chose a good MBA college. There are many MBA colleges in Pune, the top ones are Symbiosis Institute of Business Management, Balaji Indian Institute of Mordern Management, Indira Institute of Management- Pune (IIMP), Sinhgad Institute of Management, Symbiosis Center for Information Technology (SCIT), etc.
PGDM course is difficult, and only the best colleges in the world teach this course well. You should read the fake college transcripts reviews about universities that teach this course before making your decision.