Don’t put your music at risk, paying for streams is never a good idea.
As your trusted partner, we want to take a moment to warn you about the dangers of illegitimate music promotion services.
Third parties that promise playlist placements or a specific number of streams in exchange for compensation are likely using illegitimate practices without your knowledge. These services can threaten your hard work, resulting in the potential withholding of streams or royalties, or even complete removal of your catalog from streaming services.
Check this article about Spotify policy of 3rd party services that guarantee streams
More info here: What Is Artificial Streaming? - YouTube