Did anyone used online services to get their NIE

Hey all, I am a EU citizen and planning on moving to Spain in February/March I came across many services that helps with relocation specifically everything that has to do with bureaucracy. I also came across a website that can help get NIE remotely in 4-8 weeks. It’s not cheep but it’s guaranteed.

Have anyone used those services before ? Or the online services ? Or any service that they would be able to recommend?

Thank you much :)