I have the same complaint. Trying to cancel is a real pain! The service became more a of a sales pitch for their other services. After a month of sales pitches with no trades I decided to cancel. Of course, I had the same headaches of trying to cancel. Even after canceling, I was called and hounded through email for several days. I finally ended up disputing the credit card charge.
The service is nothing scientific. I would be hard pressed to recommend the service to anyone else. Best to save your money and do your own research.
The service is a little sketchy. It is a constant sell for other services. I just wanted to learn and move on. If you want to learn, there are plenty of resources online. If you want to invest without the hassle of looking for trades, spend your money on fee based investment adviser.