Lenovo — Replacement of mobile

Address:	110091
Website:	flipkart and lenovo

I have purchased a lenovo vibe k5 plus mobile on[protected] through flipkart and i got this mobile on[protected] but I used the phone on Dhanteras. after used one day the phone rear camera was not working than i called customer care many time in 2 days but all numbers of customer care was not working than i went to service centre on[protected] they did not tell me any problem and said we will give you phone after two days after one day i called to service centre they said that there is problem in mother board and they will change the mother board and when phone will be ok they will call me what is the garauntee that no problem will happen in phone next time. i want this phone replacement.