APPLE IPHONE 6S 16 GB – NEW MOBILE SHUTDOWN PROBLEM BUT I PHONE NO SERVICE PROVIDE TO ME

I AM PURCHASE NEW I PHONE 6S 16 GB,IMEI NO IS 352089079922891,SERIAL NO F4MPRQ37G5MP ON 23 FEB 2016 & CHECK APPLE IMEI CHECKER THIS PHONE IS REGITER OR NOT, THIS PHONE IS REGISTER WITH IMEI CODE BUT NEXT DAY THIS PHONE AUTO MACTIC SHUTDOWN THEN I WILL RESTART THE PHONE,THIS PROBLEM NEXT DAY AGAIN SEEN TO ME I AM GOING ON APPLE SERVICE CENTRE N BLOCK CONNAUGHT PLACE,FUTURE WORLD,STORE EXECUTIVES DRI FOR THIS PHONE & SAYS NO ANY PROBLEM FOR THIS MOBILE PHONE,I AM COMING TO MY HOUSE BUT THIS PROBLEM FACING AGAIN THEN I WILL NEXT DAY AGAIN GOING ON THIS STORE BUT HER EXECUTIVE AGAIN CHECK & SAYS NO ANY PROBLE THIS MOB PHONE,NEXT DAY AGAIN THIS PROCESS,I AM NOT STAISFIED THIS ANSWER SO I WILL BE GOING ON 2 SERVICE CENTRE,G-54,CONNAUGHT PLACE,FUTURE WORLD ON 7/MARCH/2016 STORE EXECUTIVE CHECK THIS PHONE & HE SAYS THIS PHONE IS IN MINOR SCRATCHES,THIS PHONE WILL BE REGISTER YEAR 1970 SO THIS PH WILL BE TIMMING ISSUE I WILL BE REGISTER IS THIS PHONE YEAR 2016 THEN THIS PHONE IS OK 100% BUT PLZ SUBMIT THIS PH ABOUT 2 HOUR I AM SAYS OK NO PROBLEM PLZ SUBMIT & OK MY APPLE PHONE,I AM SUBMIT I PHONE PICKUP SERVICE REPORT THIS STORE AFTER 2 HOUR I AM COLLECT MY APPLE I PHONE BUT THIS PHONE START & AGAIN SHUTDOWN I AMA SAYS TO EXECUTIVE BUT EXECUTIVE SAYS TO ME NO ANY PRFOBLEM ACTULLY AGAIN RESET THE BATTERY SO FACE TO THIS PROBLEM PLZ PLUG IN THE CHARGING THEN YOUR PHONE IS WORKING PROPER, I AM GOING TO MY HOME THEN PLUGIN CHARGER BUT MY I PHONE 6S NOT START I AM VERY TIRED & I AM AGAIN GOING ON G-54,FUTURE WORLD,CONNAUGHT PLACE ON 8/3/2016 STORE EXECUTIVE CHECK MY I PHONE & HE SAYS YOUR PHONE IS CRASH PLZ SUBMIT THIS PHONE FOR 3 OR 4 WORKING DAYS I SAID OK PLZ SUMBITT THIS PHONE I AM CALLING THIS STORE AFTER 2 DAYS HIS EXECUTIVE SAYS MAM THIS PHONE IS UNDER UNAUTHORISED SERVICE THIS PHONE SOME PARTS LOCAL,SOME TIME CALLING THIS STORE & SENIOR STAFF TALK TO ME THEN HE SAYS THIS PHONE IMEI NO TWO MOBILE PHONE USE, AGAIN I WILL CALL HIS SENIOR SAYS MAM SUM PARTS LOCAL FOR THIS PH & U R LOCAL SERVICE THIS PHONE UNDER THIS PERIOD,HE SAYS I AM NO ANY SERVICE PROVIDE TO U PLZ COLLECT U R DEVICE AFTER 2 DAYS,THEN I AM CALLING TO COSTOMER CARE ON 10/3/2016 SAME DAY HE SAYS MAM I AM RESOLVE THIS PROBLEM PLZ DONT TAKE TENSION I AM DAILY CALLING IN THIS APPLE CUSTOMER CARE BUT NO ANY SOLUTION FOR ME SOME TIME SAYS I AM WORKING THIS BUT NO ANY SOLUTION FOR MY PROBLEM MY MONEY & MY PHONE BOTH ARE SUBMIT IN APPLE COMPANY THIS FROUD FOR CUSTOMERS PLZ SOLVE THIS PROBLEM PLZ GIVE ME MY I PHONE 6S OR MY MONEY REFUNDABLE.PLZ TAKE A STRONG ACTION AGAINST APPLE COMPANY & SOLVE MY PROBLEM,MY CONTACT NO IS 9555777218.