Sony Ex - 520 - 40inch LED TV — display problem

I purchased amaron invertor tribal usb and battery on[protected]which has 18 months warranty) at Hyderabad and it was shifted to kavali when my sister was transferred to another place. Now it failed to work. I made a complaint to the customercare. They sent a machanic and he gave me a report that the battery broke down and advised me to replace the battery at the nearest dealer in nellore. As it has guaranty up 18 months, I phoned to the dealer where I have to take the battery. There is no response from the dealer. Again I contacted the customercare to inform my difficulty to take the battery to nellore and requested them to send the battery from the dealer. They agreed but did not send and give any reply.
May I kindly know Whether it is the responsibility of a customer to take the batttery to the distributer or the company takes responsibility to replace the battery on their own. I requested them i would bear the charges of transport. But there was no reply. can you please help me in this regard

@tamavada - Dear Sir,

We would need more details to assist you with this concern. Which Sony retail store is looking into your concerns? Please share your complaint no. with us here.

In case you don’t have the complaint no. please share your contact details with us here.

Regards,
Sony India Team