DMart — Not returning my product and cheap behaviour of store employee

Address: Bangalore, Karnataka

Hi, last sunday (20/11/16) i went to dmart which located in near jayanagar 4th block. I bought few things in that actually i want to buy dove shampoo. But i took dove hair conditioner, in hurry i didn't see it properly and store was full of crowd. After i came to home i got to know that it is conditioner not a shampoo, and today (24/11/16) i went to store they were not taking it back. And here i have to mention one thing in the store didn't even display cosmetics are not returned or exchange. Store employee said very rudely and i said that i didn't even open for me its waste, at least if you return it some other customers will use its not loss to anyone. And for the store guy said its a silly issue and i asked about manger he said today he is on leave, like this issues we were not take it serious he said. My side mistake is not there because if cosmetics are not returned okay fine after billing only we got to know because its backside of the bill. How does it mean tell me. The worst employee are there in dmart only dnt know how to speak with customers all are very rude dnt know how to maintain dressing and dignity all are like, dnt want to tell that word also but i am expecting call from your side.