Whitening Fast Thieves, before trial was over, they took $94.31 out of my acct. No supervisor, said I didn't do the math! Internet

On the evening of March 10, 2013, I ordered Whitening Fast. $1.03 processing, plus $3.87 shipping for trial. Received on March 15, 2013 late afternoon. On Sunday, March 17, 2013, decided  that the wasn't going to be enough time to evaluate the product, so not being near a computer called the number given. Computer generated, I gave my phone number for reference as it requested.  They  didn't have any such number, I tried twice, and twice the same.  Early Monday, March 18, 2013, I was checking my bank account and noticed that $94.31 was being taken out of my account. So, I phoned the company again and spoke to an associate. He that I have gone past the trial period and that was why I was charged.  I asked to speak to a supervisor and he said that there wasn't one available.  I persisted and he eventually said there wasn't one. He said as a courtesy they would refund my account $45.00 to keep the product, or refund $60.00 and send back the remaining. I told him I was going to report the company as well as my bank for investigation. I am so upset about this in so many ways.  I work part time, I work hard for my money and thieves like this that scam us is infuriating. Not only that, I no longer can trust purchases over the internet.