Christ University — Not got refund

In February I filled the form for entrance for which my form gets rejected and i was told that I'll be receiving my refund of 1500 in 15 days. Today's 25th may and i haven't received any refund. It's been four months now. And on 21st i again applied for another form for 29th may exam for which again my application got rejected because of some incompletion as I don't know what incompletion because I've checked two times my whole application details which was correct and if it was incomplete, how can they accept the payment then? While doing payment I didn't received any message like my application is incomplete. After that when I go to the portal. I open ups to complete the application it's again asking for payment . Why should I pay again? And today I've been told in mail from your admissions that I'll receive my refund in 15 days. So now, I want my both the refunds of 1500 each. Kindly provide me that.