Every once in a while when I'm listening to music, I'll notice that other devices are connected. Each time its a new device name, but its always another cellphone and in my recently played music I find a lot of hop hop and R&B that I never listened to that this mystery device will have played on my account. Nobody else knows my account information and I've already tried logging out everywhere. I had to cancel my payments just in case as I am worried that they could find my billing information, but I will likely renew subscription when this is resolved. It's a little annoying and concerning having someone else I don't know using my account without permission, is there a way to stop other devices from connecting to my account or find out who it is? Thank you.