Yup, that's them. Bottom feeders of the world. The best one I heard was that if I didn't call them about MY property, (I rent) I was going to be taken to court.
It's a scam. Claim to be debt collectors, but not legit. Will try to phish for personal information, or use scare tactics to get you to pay them. Tried to extort money from me, using my brother's "financial situation" as made-up leverage. Block this call and never answer it.