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 624380572172686322), 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.