Mumbai University — not getting permission to give 4 sem additional exam

Respected sir/madam,
I'm devika dubey, i was not able to give my 4sem exam due to my grandfather death. And my college is not permitting me to give additional exam. My whole year is going to waste. My college is saying that the university is not allowing them to conduct re-exam. I don't have any kt in my previous 3 sem. I really worked hard. Please help me out what should i do to save my year and take admission in tybcom.
Thankyou.