well here in the UK, we takes our locked phones to a shop that deals with mobile phones and all their accessories, and they unlock them for us for between £5-£10.
are there no actual phone shops in your country?
there probably is way to do it on the internet, but I don't know how.
the people who unlock the phones plug the phone into their computer with a cable and press a few buttons and it becomes unlocked.
RIP Jules, never to be forgotten. #KeepFightingMichael