Sony India — sony mdr 70bt

Address:	Hyderabad, Andhra Pradesh, 500072
Website:	Sony Center Kukatpally

I had purchased the earphones on last sunday. There was a disturbance in the ear phones & it was replaced. Now in the new ear phones, if i speak just near the micro phone i am hearing my voice again. The customer service people is telling that it will be like that only, use as it is. How can they tell customers how to use the product. They are changing the words with in seconds & not at all bothered about the customer.
When i brought the product in sony center in kukatpally hyderabad, the sales person said it will vibrate when you get the call, when i was asking it is not vibrating, he is telling i never said like that he is telling.
These people not even bothered about the customers once they sell the product. They never intimate these things before purchasing the product.