Help My Sony Xperia Z3 Compact is locked

[ferkrgr]

I have a Sony Xperia Z3 Compact phone and it is blocked. It has the PIN lockscreen but I cannot remember it.
I tried to do the hard reset, but the buttoms do not work (power buttom + up/down), when pressed have no answer.
I tried Xperia Companion, but it says that is locked, then I cannot use it.
I tried Emma or Flash Tool, but is the same, it says I need to unlock the phone to have access.
And still, I tried those codes at the Emergency Call, it has no answer. I have no option with Google Account, because this option does not appear. And also, when I try many times, like 15 times, I have no other option offered to acess.
It has no wifi connection or anything.
I just wanted some way to have access to do a hard reset or else it is lost forever.
Can anyone help me?
Thank you.

 

[Dannydet]

Sorry but without that code you are out of luck

 

[ocnbrze]

how long are you holding the button combo's? i see conflicting info where one says hold power+vol up and another says power+vol down. try them both and hold them for a few minutes until you see the screen change.