Koryo — replacement of led

Address: 513-514 housing board colony, Ambala, Haryana, 133001

I purchased a led from big bazaar for rs 8888 which i purchased on 16 june 2019 and due to construction work in my house i was unable to get installed from the koryo engineer and i kept that box seal packed from that date till 9 december 2019 (Installation date) and on 9 december koryo engineer visited my home for installation and he himself opened led for first time and seal was broken by the executive and he succesfully installed the led on my wall and with in 15 minutes after the executive left my premises led's screen got blank and led stopped working so called that executive again and ask him to revisit again and check that led again to see what is the problem with the led and there koryo executive himself commited that there is problem in the mother board of the led and he said that it is a case for replacement of led so i contacted the big bazaar for the replacement big bazaar manager (Anil kumar) said that koryo company will treat my complaint when i contacted koryo (Dhoormil floor supervisior[protected] he said you have not purchased led from me so i am not responsible for that

So now they are repairing my product
And i want replacement of product or full refund of led
Because it was seal packed and i have used led for only 15 minutes