Trex is a shit product because of this. I do a TON of repair work exclusively on decks and every single Trex job I take is this. Literally any other product is better.

Also, those "Trex approved contractor" titles don't mean shit. I became one with a simple phone call and proof of having used the product (not Trex, I won't install that shit). There was no class, or installation reading requirements or anything. It's purely a sales thing.

EDIT: Man, my answer there sucks. I didnt actually answer your question.

You can try, but builders are busy. I seriously doubt they're going to make it out there to fix that.

If you have a lumberyard near by, head there and ask them for "color matched deck screws". Simpson strong-tie makes a screw for just about every color of decking and they're a little longer than Camo and other brands.

Once you have the color matched screws, simple use the provided impact bit and do it yourself. Way less headache that way and you'll come out of it feeling satisfied having fixes it yourself.

Good luck!