Delhi University — non refunding of fees

I have taken admission in Msc Chemistry in DU for session 2019-20. Then I cancelled my admission within time period stipulated for eligibility to fees refundment and the same is also approved by the college. But I havent recieved my refund.
I have suffered a lot of mental agony and discomfort by going to the DU fee refund office all in Vain.Please resolve my issue as I am going through a financial trouble.