HappyEasyGo — wrongly issued tickets

Address:	Mumbai City, Maharashtra, 400072
Website:	Travel agency

I had booked two tickets from happy easygo so i had booked for 12.10 and did the payment as well which was of 4500 but later the payment got failed and they have booked a ticket at 17.05 which i din wanted where in i have not given the confirmation also. And now when i'm asking for changing the timings they are asking me to pay around 2750 for the timings change and when i ask them for refund they are not giving the refund