Ecom Express — product is not delivering

I ordered two items on[protected] from Purplle.com*It was a prepaid order*. Estimated delivery date was on[protected]. On[protected] my courier was out for delivery. I received a call from the delivery agent asking about the address at 5:15 pm. The same time I recieved a text message that my courier got undelivered as they couldn't contact me because my phone was switched off. I rescheduled the order to[protected] and called the Ecom Express manager. He said that it will get delivered on[protected]. I contacted Purplle.com customer care service and they consoled me. On[protected] my order was out for delivery and again got undelivered. Delivery agent has not even tried to contact me or arrive at the location. When I called, they didn't answered. The same thing is happening for the past 4 days. Now my courier is OFD locked?