Boat — Product not as expected

I had purchased Rockers 450 from retain shop. But the headphone broke within 3 months. I had put the headphones and tried to move my head but the handle broke without even dropping it. I had handle it with utmost care still it broke. I took the same to service centre in Vashi but they are neither exchanging it nor repairing it. I tried to lodge complaint online but the sight is showing only service centre addresses. There is no sight to file the complaint online. I am disappointed by this. I had high regards for boat product but now I will never buy their product.