Suggestion needed?

Hi friends, I got an network carrier locked Xperia XZ and I want to get it unlocked...
I have done little bit search on google all the time some type of unlock service provider appears in my search and while doing my search I found a guy was saying that unlocking service provider scammed him and didn't sent him proper unlock code as Xperia isn't that much popular brand anyone I'm affraid to try any company incase they failed to get my phone unlocked I could lose my money after asking on some...

Suggestion needed?

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