yeah, the Acura dealer. They won't charge you, its a lifetime safety warranty. I had mine done about a month ago. Just don't ask for anything extra like a wash or vac unless they say its free.
They might also call and let you know if something else is wrong with it. If you don't want that fixed, then tell them "no" If you say okay they can fix it and charge you.
Just go in and say your driver side automatic seatbelt won't move and ask them kindly to fix it for you. lol, If you walk in and act all big shit they'll hate you and probably tell you they can't do it for free, but if your nice they'll do it for you.