I have heard from friends that they got banned for using adblockers on free Spotify.
My account got deactivated after doing that (firefox+ublock). It was really sneaky because my password just stopped working. My account was reactivated by contacting the support and they never told me the reason why my account got deactivated.
But did actually anyone actually pirate your music? Like is your music on a torrent indexer or shared on a site specific to music?