Want to get cheated and lied to? Sign up with Sling TV. Remember that 7 day trial period? If you use the sign up incentive, the trial period is gone. They gotcha.
I signed up with Sling, used the new subscriber incentive and of course they want my credit card for billing. I cancelled the next day (could not get the site to work on my TV). Refund? No, they say,. somewhere in 30 pages of small print is a "once we got your money you ain't getting it back" clause. The only way to protect yourself from these thieves is to not buy their product.