Sharp India — Not repairing my washing machine

Address: Kottayam, Kerala, 686637

My automatic washing machine model number Sharp ES-N70ES-A purchased on 22.3.2013 is not working for the past one year. I repeatedly registered service requests so many times .Always they gave me a register number but no body came to repair.I had insurance coverage in new india asuuarences for this washing machine. As per my request company technition gave me a quotation for repair and took away the machine. After repeated requests after six months they returned the machine saying it is unserviceable.I requested the company to give a certificate to the effect that the washing machine is unservicable so that I can claim the insured amount.But they are not giving this certificate