“For years I asked, pleaded for a chance to own my work,” Swift wrote on Sunday. “Instead I was given an opportunity to sign back up to Big Machine Records and ‘earn’ one album back at a time, one for every new one I turned in. I walked away because I knew once I signed that contract, Scott Borchetta would sell the label, thereby selling me and my future.”

Swift added: “Now Scooter has stripped me of my life’s work, that I wasn’t given an opportunity to buy. Essentially, my musical legacy is about to lie in the hands of someone who tried to dismantle it.” She cited Braun’s involvement with West around the time when the rapper and his wife, Kim Kardashian West, released a partial recording of a phone call that they said showed her agreeing to appear in West’s lyrics, as well as when West released a music video that included a Swift likeness naked in bed.

“This is my worst case scenario,” Swift wrote. “Any time Scott Borchetta has heard the words ‘Scooter Braun’ escape my lips, it was when I was either crying or trying not to. He knew what he was doing; they both did. Controlling a woman who didn’t want to be associated with them. In perpetuity.”

She illustrated her message with an Instagram post by Bieber — captioned “Taylor swift what up” — that shows him on a video call with Braun and West. Swift added in her own caption: “This is Scooter Braun, bullying me on social media when I was at my lowest point,” adding, “He’s about to own all the music I’ve ever made.”