Christ University — Not got refund yet

On 21st of may I filled the application form for the exam which was held on 29th may. I paid the amount 1500 in that form and I didn't get any application number nor any mail regarding this. Due to this I wasn't able to appeared for the exam and I missed my exam. I was told by the university that I'll get my refund within 15 days. And now it's july. It's been two months I didn't get my refund back. Kindly check that. I want my refund of rs 1500 back.