Delhi University — return of fees

Sir i am ishika goel. I have cancelled my application of bsc maths hons. On 11 july 2018 from hansraj college but the money is not yet refunded in my account. I have completed all details and i have also submitted a copy of cancellation slip yet i have not recieved my fees back. Its seems more than 2 months so please i request you to refund my money as soon as possible.