Cerebral Boost Intense Focus This company offers a free trial (pay only for postage) but by engaging, you are agreeing to a monthly order!
I ordered 1 pack of Cerebral Boost only. They charged me for another pack of something I didn't order as well as the the Cerebral Boost.
They both arrived and I sent the one I didn't order back. I tried calling all the relevant numbers on their helpdesk email, none of which worked and then, a month later they charged my credit card $133.30 for 2 more packs.
The wording on their terms and agreements are convoluted and vague, but it is there that I found a number that actually worked!
I have now cancelled my credit card ( a pain as I have autopayments to update now) and will not be sucked in again by any free trials on line!