Samsung / Samsung Mobile GT-s6802 — he is not working

Address:

Bhopal, Madhya Pradesh

i was purchase a mobile phone 16/9/12 after two day my mobile camera is not working that,s why i am going to be service center and member is format my mobile and he was saying if your mobile is not working we have change after two day he is again create the problem again i am gong to be a service center then he is saying your sim card is not well after that we change a sim then again create the problem and then again i am going to be services center so he was change my mobile camera but still is not proper working i am so frosted my mob and seller was told me he do not change my mobile we are so many times visit in services center my mobile is complete is one month 16/10/12 and so many problem so kindly request you to please help me i so disturb in this mobile and again service center people is saying he is change a mother board again i don't want to change any stuntmen my mobile.