Diet Supplements SEC Shipments keep coming but no way to cancel. Won't answer phone. Las Vegas Nevada

I ordered a free sample of Pure CBD advertised to assist in weight loss. I was to only pay for shipping. I did not receive an invoice when the product came, so no idea what they billed me. It is not showing up on my debit card statement as anything similar to this company name & it was to be $4.95 & I have no charge in that amount. I have since received 2 more bottles in the mail with no invoice & I'm sure I am being billed. I want to cancel whatever I've gotten into, but there is no website when I search & I am put on hold forever when I call & they eventually hang up. I want my money back & I want answers.