Hyundai — about backlight of i10 grand

Address:

Sirsa, Sirsa, Haryana, 125055

Dear sir
I purchase new i10 grand in december 2018. Yesterday backlight of my car is broken and when i go to the showroom for purchasing the new backlight they told me that they have no any backlight to give it to me. I request them to solve my problem but they didn't listen to me and didn't behave good.
I request to you solve my problem as soon as possible.
Thank you