Avast aka DigitalRiver.com Unauthorized payment caused overdraft charge, they refuse to reimburse Internet

Avast emailed me to say they were going to automatically renew a product I was not aware I had, PC Cleanup. I replied and told them not to. Since I had no memory of ever purchasing this product I had no idea where the money would come from and since I didn't even know I had it I surely didn't need it. They went ahead and renewed it anyway against my wishes. They used my PayPal account which debited my checking account. There was not enough money in the checking account to cover the cost of this renewal that I had instructed them not to do so it incurred an overdraft charge of $32.00. After many emails and phone calls I managed to get the renewal refunded but they will not refund the $32.00 overdraft that they caused. The bank won't reverse it because it was not their mistake. Avast caused it by not doing what I told them to do...NOT renew the PC Cleanup! They owe me that $32.00 Can anyone tell me of any other site or action I can take to publicize this? I want this spread near and far so the world can know of their dishonest business practices.