iphone from sprint but order result: IMEI is not recognized in Sprint

order ID: 88145
Status: Success
Sprint USA- iPhone check for clean/blacklist/unpaid bill – INSTANT 35333407xxxx87
IMEI: 35333407xxxx87
Status: IMEI is not recognized in Sprint
the phone is locked to sprint and activated with sprint sim card why it not reognize in sprint?
which service should i use to unlock it?
this order should be refund me or not?