Autopay Xfinity Mobile account.

Is it even legal that you cannot turn off autopay in Xfinity mobile account? They keep taking my money and I never activated my phone because I was mislead about ipad cellular service. Instead of answering my question about bringing my ipad, the representative told me to get the "free" ipad that I only had to pay the $10.00 line fee to have service; only to find out that none  are in stock and

I doubt they ever were or will be again. I can't have my phone with one carrier and ipad with a different carrier. Still Xfinity keeps drafting my account.