Period product samples? (Uk)?

I have asked Lil lets for some samples for my channel on YouTube, but they refused because they'd already sent me some personal samples, I think it's unfair that they give them to some girls on YouTube and not others, so does anyone know any other good sample sites, or samples that I can order..?? I've tried Tampax and always, but they refused to even send one sample out... Help pls?