Purplle.com — not received the product but showing it was delivered.

We haven't received the parcel from purplle.com but the status is showing that the delivery is successful.
I have complainted it to the purplle customer care and they sent me the sign which has been kept on successful delivered option.
The sign that was on that note was not mine or not even was one if my friends, neighbours or watchman.
Please resolve the issue as soon as possible because the order have to be delivered by yesterday.