Watch out for different types of acai berry scams, because you may be participating in something legal that many people agree too, but others will holler scam. Many of the acai berry products, as well as colon cleansing products, are notorious for offering you a 30 day free sample of acai berry. After the 30 days is up, you have the option to cancel it or not. That’s fine. The acai berry scam comes in when you can’t call to cancel it because he number is busy. Very few acai berry companies scam this way, but some do. Many do charge your credit card on the next shipment, but you are free to cancel before that happens.