Bangalore University — Requesting to refund admission fees

I am Ranjana T, I have passed my puc in the academic year 2019-20.I have by mistake applied for B.com course under open university at bangalore university for the academic year[protected] and paid the admissions fee of Rs.6655/- . I tried communicating to the university for admission process but didn’t receive any response from the university and unknowingly paid fees. I request you to kindly refund the admissions fees as the amount is huge and i won’t be able to pay fees for the same year again.
i have attached the fee receipt.