strange problem in lumia520

[.:B-A-G:.]

hi
i use server to get unlock code for lumia520 locked org fr
phone ask pin network with 10 try, i put code but show bad code and ask puk code after 1 try, reboot phone, and is ask pin code with 10 try.
after use "clear simlock code" in best (wp8) phone accept code and unlocked and work 100%.
with read info show simlock statu: locked
and if reboot phone is ask again pin network code with 10 try and cant accept the same code only after use "clear simlock statut" in best
flashed phone but same problem

any help!!

[.:B-A-G:.]

no idea !!!any help for this problem