Decathlon - Package not delivered

I had ordered a product (Order ID ********) from the app. The delivery was attempted on ** Dec. As I was out of station, I asked the agent to deliver the product to the guard at the gate. While I recieved the delivery update, upon reaching back, I found out from the guard that no such product had been delivered. I called the delivery agent who told me that he had infact, delivered the product at around **** h. But the CCTV footage from that time also shows no evidence. There was no help from the Decathlon Customer care as well.