our records indicate that this product has been replaced

hi all can you help me with this one.i have Iphone 6+. i bought it at 20 April 2015 from a store.when july 2015 my iphone 6+ suddenly no power.i bring it to the store i bought.when my iphone 6+ back under warranty.when i check at https://selfsolve.apple.com/agreementWarrantyDynamic.do,it said we're sorry,but this is a serial number for a product that has been replaced.please check your information and re-enter your serial number.if your information is correct,you may need to contact us.when i check at https://getsupport.apple.com it said :our records indicate that this product has been replaced.please provide the serial number for your replacement product to find the support and warranty coverage information.for more information please contact us

this is letter from apple

Genius Bar Work Authorization

customer information

problem description /diagnosis

issue:customer states no power.

steps to reproduce:confirmed in store.no data or sim in iphone.

cosmetic condition:no external sins of liquid damage.

proposed resolution:after component validation replace entire device under limited warranty.

contact apple support case:889xxxx34

employee 865xxxxx4

repair estimate

item number description Price Amount due Customer

KBB

661-005xxxxxxxZ/A iphone 6 plus,MM-TD,xxGB,Gxxx,CI/AR $0.00 $0.00

IPHONE 6 PLUS,FLAT RATE REPAIR,RETAIL $329.00 $0.00

Total(Tax not included) $329.00 $0.00

the repair terms and Conditions on the reverse side of this page will apply to the service of the product identified above;

apple is not responsible for any loss,corruption,or breach of the data on my product during service;and

as loss of data may occur as a result of the service,it is my responsibility to make a backup copy of my data before bringing my product to apple for service

goods presented for repair may be replaced by refurbished good of the same type rather than being repaired.Refurbished parts may be used to repair the goods