HappyEasyGo — no pnr issued after 32 hours of booking

I have booked 5 Mumbai-Kolkata flight tickets from Happyeasygo mobile app. The money has been debited from my credit card immediately and a trip id got generated in the app (my trip Id is[protected], however, I did not receive my tickets. After waiting for almost 10 hours, I have sent an email to the support email id and posted on their Facebook page. However, even after almost 30 hours, neither I have received my tickets nor I have gotten any response, I am wondering if I should contact my bank to notify a fraudulent transaction.
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