Impact cash took out two amounts and won't fix it

I called Impact Cash to make a payment and I specifically told the rep to schedule a payment for $100 from my ING account. I've used that account with them before even though I also had a US Bank account listed on my account as well. The rep confirmed that this would be done. Later I found out that they received the payment, but they took it out of the wrong account, which at the time did not have enough money in it. On top of that, instead of a single payment of $100, they split the payment $25/$75 and caused two overdrafts fees.

After speaking to them and faxing them the banking reports like they told me to, they refuse to fix it, and have caused about $100 in fees to acquire at my bank because of their mistake. They said they wouldn't fix it, but they would take $35 off my next payment.

Is there an outside source where I can report this because I'm getting no where with them.