Due to the outcome of your sales call review we can confirm that the agent you spoke to did not mention a specific date for when you could cancel. Only thing mentioned was the choice of changing your mind about the service before an installation technician was sent out to your home. You always have the freedom of cancelling. However in this instance any fees incurred would be valid.
I am curious though, did you hear this maybe during a customer service call instead of initial sales call? Looking forward to your reply.
If you are having an issue, I suggest starting a new post, explaining what the problem is, and what you have done, or have been instructed to do, if anything, to identify and rectify the problem. You can start a new post by clicking on the "New Post" button at the top of the page.