Celkon — Celkon switch off

Address: 507203

Sir, I had brought celkon diamond u on April 2017, after one month mobile suddenly switch off in before it got some spark sound and switch off then I given it to authorized service centre they said there mother board prblm, we send it company it will come back in 10days, but it still no response what to do know. When I went to purchase mobile in mobile shop some o[censored] r company seller advise me to buy he told me the features of mobile I.purchased while I useing there is huge difference between mobile nd company seller I am totally un satisfied with preference plz provide me mobile as early as possible.