officialiphoneunlock.co.uk, contact info on website
You had to ask?
Phone unlocks are not something you need to go to a shady website to do. In fact, most providers will allow you to unlock the phone after you have paid off the phone and your subscription to their plan.
As a side note, I’m assuming you’re on this site to figure out how to do this without paying. Jail breaking a phone became legal in 2012 so just youtube some Kali tutorials and I’m sure you’ll find something.