I ordered Stack and Tilt video tapes for $9.95 with money back guarantee for a 30 day trial. I sent the items back with a company return authorization number. StackandTilt.com billed me $80.75 and continues to charge me 5 payments of $19.95. They do not answer their phone. I filed a complaint with my credit card company. Also, I started to buy from this same company a device that measures a golfer's "swing speed". Because it wasn't clear what the price would be, I never clicked "Place order"; however they sent it to me anyway and charged me. Be VERY Careful with this company