Nokia India — Declaring nokia 925 as non repairable by nokia customer care centre

I had purchased Lumia 925 (Imei No. [protected] Ean No. 0) on 09 May 2014 from M/S Multiline located in Dwarka, Sector-12, New Delhi. It started giving trouble from the beginning often shutting down abruptly. However, since your care centre at Dwarka had closed down, I had to contact the dealer. He found some loose connection and fixed it. In April, 2015, it again went off. However, the dealer suggested me to get it repaired from Nokia Care Centre as the phone was within the warranty period. So, I went to a Nokia's Customer Care Centre located at Dwarka More . On 03/05/2015, they again fixed the problem within a few minutes stating that the jet connection was loose. Thereafter, I went to USA for holidaying where I clicked photos. However, on 08/06/2015, it again went off. After coming back to India, I again approached the Costumer Care at Dwarka More, New Delhi. Since the warranty expired a few days back, they told me that repair would be charged. I agreed. However, after a few days, they rang me up to inform that the phone cannot be repaired as there is some problem in the mother board. Even they expressed their inability to retrieve the memorable photo I clicked in USA. Please suggest, what should I do. The should come to my rescue.
Ms Garima (Mob No. [protected])