Myntra.com — ordered product not delivered till to-date

I ordered a product on myntra.com] order no:[protected]-8875303. On 04 jan 19, i got a message from myntra that the agent will deliver my product today and the the agent's phone number and name was also there. Next day on 05 jan 19 the updates received from myntra that the ordered is undelivered and the reason mentioned that the costumer refused. But in fact no one called on the registered mobile. I called him number of times but not responded. Again i received an update of apology for late delivery (Last date 07 jan 19) and stating that the order will be delivered as soon as possible. Till todate nothing has been delivered and now on website in track orders it is mentioned that the product has been returned to the origin. Did i make a mistake by paying online in advance? This is my very first and worst experience with myntra ever.