I ordered a $10 introductory CD for Mandarin Chinese. It arrived without incident.
Now I have received an additional Mandarin course which I did not order or authorize ($240 total, four easy installments, 30 day trial), along with congratulations on my new membership. Pretty sleazy business practice!
I am returning the expensive course at my own expense with a FedEx tracking number.
I am also sending a registed letter confirming a phone conversation.