You might not want to talk about it but it has been brought up recently, if this is what happened. You contacted someone by text to ask something that wasn't in their ad. Got a response but decided the situation wasn't right for you. A day or two later you get a text from an unknown number telling you you have to pay for wasting the SP's time or bad things will happen.
Here's the truth. You contacted a scammer with your first text. You get a reply to your question. They would have asked you for a deposit or some kind of money transfer to set up the meeting. When you didn't, step two of the scam kicks in. They threaten you, tell you to pay for nothing but the time it took to text a response. Now you're sweating because you think someone's on the way to kick your ass or just take whatever money you happen to have on you.
I cannot stress this next sentence enough. IT'S A SCAM!!! Some asshole is sitting on his (or her) ass, hundreds or thousands of miles away, trying to scare or intimidate you into paying for nothing. I'm not sure if it should be called blackmail or extortion. It's happened to me a half dozen times already and is getting so old that the last time I got one of those texts I replied with "Go suck a dick" and never heard from them again.
Do not fall for this shit. Do not pay these fake ad, fake threat bastards a cent.
If this isn't what happened, ignore rant.