HappyEasyGo — payment done but confirmation ticket not received

Address:

Gurgaon

I booked my flight ticket for delhi to ranchi for june 28, 2020, through happyeasygo. However, i had to reschedule my ticket to june 1st, 2020 for which i got a link from happyeasygo saying i have to pay inr 9682 extra as fare difference. I paid the money and got the payment confirmation from the payment portal. However, i have not received the ticket confirmation via email or contact number. There is no one answering the customer care number. I am separately trying to contact them but getting no response. I have to board the flight in 5 days and i still don't know if my tickets are confirmed. It's been 48 hours and i have still not got the confirmation ticket and the status is still showing pending on their official website.
I am really confused and unable to think of a way.
Is the company fraudulent? I think i have made a mistake booking my ticket from this website.