Hi
Now a days its more simple to unlock network lock.You have no need to contact the providers as at times they may not reveal you the code.You can unlock it yourself safely by Buying codes from unlocking sites.I recently unlocked my LG mobile safely by getting codes from Unlocking4U - LG Supported Models.I hope You can also try here dude!!
Hi each mobile has an unique unlock code . If you need unlock code you can visit this site Simpleunlocking.com here you can get the code and unlock your mobile network lock easily. To get the code you have to mentioned which country is locked now,network provider and imei number. Then they send unlock code through email.