Hi,I'm Zoey and I'll be assisting you. I'm reviewing your question now. Please be patient while I research and compose a reply for you.
Can you give me the website where you ordered the free samples? If you paid by credit card, have you contacted your card carrier yet?
You need to talk to your card carrier and tell them that the charges are unauthorized and that you have received nothing for the price that has been deducted. Ask them to do a chargeback. If they won't, you're going to have to cancel your credit card and open up a new one to stop the billing unless you can find out where to cancel your "membership" in their program.
If you can reply to this question thread and tell me where you found the offer for the free sample, I will try to find out how you can cancel the offer. I don't think they will likely be legitimate, as you've received no product, but just in case they are you should be able to cancel according to their specific terms and avoid any further issues with them down the road.
Just checking in to see if you need more help or any clarification of my answer. If so, please reply here on this question thread.