I promoted my music with Jango about 10 years ago now. I remember reading reviews at the time saying that you basically pay $1 per fan. I really didn't mind that idea and found out that this was true, over a six month period I paid $12k (true story, I was addicted) and got a little over 12k of fans. Out of these 12,000 fans I expected at the very least 10% to buy my music. Not ONE sale via Jango 'fans'. Out of 12k email addresses supplied less than 1% replied. Out of 12k fans about 12 followed me on Facebook. Whether real people are listening to Jango or just Bots, I don't know. I do know that some of the comments were genuine and some seemed repetitive. In a nutshell, $12,000 = 12,000 fans = 12 Facebook followers which equals $1000 a fan. Talk about a fool and his money.
My advice is save your money and promote your music with free services like social media and submitting to real radio stations and podcasters.