Unlock my sprint device


I have contacted friend but I just started my my service just rent and I got a brand new phone and they won't give it to me unless I pay it all off and I have to leave for work to Australia and 3 days and I went to take my device.
 


then pay it off. they not going to unlock a phone that they own
or return the phone, cancel the service. buy a unlock phone.
 

Thanks I'm just going to return it take care