I searched for Papa John's (pizza) coupons on line and clicked on the "Top Rated Coupons.com" site. I input my cell number to get an access code not realizing this was a service ($9.99/mo) and I would start getting tons of unrelated texts!
I went back to the website to find out how to cancel and in the fine print it tells you how, but not where (the cancel page) is located!
I've blocked them from my cell and registered a complaint with the FCC. I will still probably be charged!