Mayur Enterprises — fitbit versa

Ordered a watch (Fitbit) under cash on delivery. After rec the parcel when i opened the same product which was not enclosed and had placed two non branded watches which might be costing hardly 200 rs.
When i tried to contact the mb number given [protected], the same is not reachable. While surfing through google i found many complaints against this company which consists of this mb number. Moreover, they have sent consignment through bluedart without any gst bill