Consumer Redressal

I have taken admission in iibs banglore for pgdm 2020 and have paid the Registration fees that is 50000/- and after that due to some personal problem I had to cancel my admission. I have cancelled my admission within the last date and requested for the refund but it's been 9 months institute has not refunded me a single peny. As per the AICTE norm they should refund me the full amount within 7 days of cancellation but non of the person from the Institute is responding and proceeding my refund. Please help me to get all this to the authority and to take my money back