DirecTV customer - my experience

So, I bought their general pack not long ago, and at the time (just like you sign the terms and conditions for any general subscription based platform) I signed their terms and conditions, knowing that the free trial would expire in a few days, and a day or so before that happens, I will receive an email about the same if I wish to cancel the subscription. Fast forward to now, (having previously used the service for a combined total of once for an hour of watching a wnba game) I've received a charge on my credit card, and told them that 1) I hadn't received an email whatsoever from them about it 2) the charge is still pending so it can be cancelled, and that no one in their right mind can remember the number of days any of their subscriptions free trial lasts. 3) I tried to cancel the subscription when it was during the free trial (I remember this because this was prior to when I got charged on my account). Inspite of putting forth my argument to both the associate (very disrespectful by the way) and the supervisor, they still won't give me my refund back and cancel the account, saying that the billing cycle was over two days ago (keep in mind the transaction is still pending and was made today), and that I did receive an email which was a long line of images with small text at the bottom mentioning which date the free trial ends. Absolutely horrible customer service, and will never buy any services from them ever again.