Sony India — i am not getting my phone back.

Address:

Faridabad, Haryana

I bought sony z ultra(c6802) few months back, but unfortunately after 2 months it accidentally slipped from my hand and fell on the floor, as a result it's screen was damaged.Then i went to sony service center nearest to me and submitted the phone. Just like they, i went back to them after 10 days. Then they told me that you need id proof to get the phone.But unfortunately i lost my pan card few months back so now i only have the letter that comes with pan card and FIR complaint of lost pan card.So i went back to them by carrying RATION CARD of my father, where my name and birth date was mentioned, but they refused to take that.So i kindly request you to help me.