Indeed scammers - what to do?

Basically, I applied to a job on Indeed - the company it was posted under is legit (it even linked to their Indeed company page, though I have no idea if it was a clone since it was a couple of weeks ago), but someone posted a job pretending to be from that company. It's one of those stupid things where they tell you to do remote administrative (and other) tasks and they'll pay you a ton of money for only working two or three days a week.

To clarify: that wasn't the job in the original posting, it was something totally different. When they responded, they said that I would be doing remote administrative work and that's when the alarm bells went off.

I didn't take the bait once I got the response since it was fairly obvious that it was a scam, but I wanted to know - is there any way I can get them to stop emailing me once a week? I haven't actually tried sending a response and telling them to stop since I'm a little nervous. Also, should I be worried at all?