I had similar problems. Shipped a very tiny tube sample.
Auto billed repeatedly up to $300-500 on credit card. On hold for SEVERAL HOURS trying to get rep on phone. Reps would put you on hold for long time or disconnect you (intentionally). When told rep I was seeking legal action I was credited very little money back.
Got taken for $200-$400. Buyer beware. Nothing is free and the claims are misleading. It doesn't work on bonded teeth.
Same thing with another toothpaste company. I got burned twice.
I had gotten both trial samples at the same time. Don't be naive like I was.
Reason of review: Problems with payment.