Balaji Traders Pratap Nagar New Delhi — I ordered for boss truly sports free wireless headphone

I ordered for a boss wireless truly sports headphone on cash on delivery but when i got delivery i found a speaker that too china made having the bill for boss wireless truly sport headphone this is the way they are cheating openly and also the delivery boys say that once you open the parcel it would be not returnable that means the delivery company also is invole in it please see that this complant is looked after and proper action taken