What Are Some Good Replies To Greatly Annoy or Get Rid Of These Reddit DM Scammers?

The scammers out here are a menace, Most of them are easy to identify by having low karma and very few days of Reddit. But I've seen a fair number seem to be buying(I assume they are) old Reddit accounts with ages of a few to several years. After a bit of chat however you'd realise what they're really after. My dms might have a ratio of maybe 13:1 scammer to real redditor.

I was wondering what are some things you can say to scammers to get them off your back or annoy them or just make their job harder by stringing them along or something. It's just feels like a big waste your time just closing and ignoring the chat especially if you chatted a while with them just being a cool person having decency. It'd be great if you could reverse scam them but that's difficult to pull off. At the very least, how can we reply to make the work of scammers so frustrating they are likely to give up or at least much less likely to want to continue?