I got the same text after misdialing an 800 # for a radio talk show. I was a number off so I got a sex line. I hung up but continue to get texted by them with an offer and obscene language. I filed a complaint with the FCC. Verizon said to text back "STOP" next time I get another.
I misdialed an 800 number, too, and got a phone sex line. Then I received a vulgar sexual text. They said to text back END if I wanted to be removed from their list. I did and immediately received a text saying I would be removed and no longer be charged (which concerns me). Right after that I got another spam text from that. I took Axyoyomama's advice and replied with "STOP" and there's been no more texts since (been 20 minutes.)
So violating. I misdial a number and now they have my personal cell.
I tried to call a radio show as well. One number off. It was a phone sex line. Just like the others said, i received a message asking for a good time. I looked the number up online, found this site, then immediately blocked the number. I called t-mobile, they suggested I go ahead & text "STOP" & unblock the number (so the text would go through) & then block the number again.