Proactiv
Good product (not the new formula, get the Original) but THE WORST customer service EVER. They also have pretty shady billing etc.
Example: Shipping me products I didn't order, then making me pay for shipping back and shipping for the correct products.
#2: Purchased it the first time because the special on TV said free overnight... 7 days later it never came... Called Proactiv and had 3 reps swear up and down that they NEVER overnight packages and do not offer that shipping option... Got my package 3 days later, and the shipping label says in big bold letters OVERNIGHT SHIPPING ......