https://www.facebook.com/Hinstarr?ref=br_rs hin chilvers from chch. fb nick is hinstarr there, which coincides with the tm name of starry11 you provided, so high probability it's the one you're looking for. having said that, this acount is some female, guessing the mrs of the actual seller, Jamie Jay Gibson (https://www.facebook.com/jamie.jay.gibson) based on regular tags together and the commentary.
could try mesaging there on either (or both) above accounts, seems to be active, careful fo being too aggressive as i suspect one of them is a kids or his mrs account (also you probably wouldn't progress far in negotiations that way). but first take snips of the people listed as his friends/family etc. in case he blocks you or makes it private and you can't see it later. may have some luck messaging them if get desparate and TM doesnt help with your dispute.
may even get lucky and someone here is a mutual friend.
jamies car / plate pictured below (or so it was in june 2017), may lead you further to finding mutuals that can help you find this guy and do right by the trade. on his fb acc also has some history of subies pictured along with plates, but i guess he dont own them anymore. his jan 30th 2018 profile pic suggests he currently has a gc8 with white wheels or something (i prob got the gen wrong)
hope that somewhat helps you in your quest to find the dude that ripped ya off and ran.