Cam Plus Charge on Uninstalled OG cameras without Permision

You are not alone. It is a cavalcade of bad faith practices: (1) It is automatically added to your cart at checkout and you have to delete it if you do not want it. (2) There is no communication to the user prior to converting the free trial to a paid subscription. (3) There is no choice given to the user to convert to a monthly vs an annual. (4) Trial Period begins on purchase rather than activation. And (5) there are no official Terms and Conditions disclosed at the time of purchase. These are buried in the FAQ:

Please do not accept these practices. Contact Customer Support and lodge a complaint requesting that you get what you paid for. Doing nothing only enables this practice.

See this thread as well: