UniverCell Telecommunications — bad shop retailer

Sir,
Recently i brought 1 honor jolly 2 plus from universal mobiles ambattur

That time due to some offer 1 headset is free with it

Retailer said he will give it in few days as it is not in current stock

And it is nearly 6 months from the date i bought the mobile phone
The retailer is not at all responding
Very rude behavior

I hope you will take the necessary steps as soon as possible