Paytm Mall — order got cancelled without giving any reason

Address:

Paschim Medinipur, West Bengal, 140104

I ordered from paytm on maybe 9 of august and i was initially supposed to receive order on 12 but it got delayed by 2 days and then again by 2 days on 16 i called the courier service they said it happened because of wrong pin and would be delivered to me in next 24-48 hrs but i checked my order details in the morning and it showed cancelled without any reason. This is not done seriously!!!