Delhi Transport Corporation [DTC] — Haven't received e bus pass even after paying 500 rs

Address:	DTC Headquarters, I.P. Estate, New Delhi 110002
Website:	dtcpass.delhi.gov.in/apply

On 10th march I had submitted the online application for my student e bus pass, I had filled all column and proceeded to pay 500 rs for 5 months duration. however after the payment was confirmed from my side, my screen was stuck in infinite loop which went for about half an hour, altho I got the notification from the website, that the transaction was success. however I haven't received any sms or email from them regarding the successful submission of my application, which they usually do within minutes after payment . its been 2 days now, I haven't recieved my e bus pass, or a single sms/mail regarding it . I have tried emailing them, and calling them multiple times, but they are not picking up my calls, or answering my emails, please do something about it . I demand full refund for my 500 rs . their email is [protected]@dtc.nic.in

my mobile number is [protected]
my gmail is [protected]@gmail.com