8665260177
Agent said she is from Firstsource Advantage, LLC
lots of 1 star ratings on Google for unsolicited calls
I’m not sure if it’s the original ones, these ones are Indians for sure.
["Unknown scammer number ",“Debt collector scam”]
[[3],[3,9,15,37]]
This might be a skip tracing number for First Source.
Firstsource appears to be an established business but there are loads of complaints about them for FDCPA. A consumer lawyer did a whole advertising page and even a YouTube video wanting to get business from consumers who have Firstsource going after them:
https://www.lemberglaw.com/firstsource-advantage-llc-collections-complaints-calls/