www.WOZO.com Charged my bank account without permission. Internet

I signed up with www.wozo.com through treasuretrooper.com because I was given the option of completing an offer of receiving $8.00 for signing up with wozo for $2.99. Not only did they not authorize treasuretrooper to credit my account, they charged my account 4 days later so I ended up paying $36 something dollars for nothing. I had to delete my bank account so that this company would not charge my account furthermore. I spoke with a manager who was very uneducated and rude telling me there was nothing he can do. Its a big scam, they sent me the two posters I supposedly bought, you could buy these same posters at walmart for $3.99 each. They are trying to scam people, stay away!