Phone call received stating they were collecting a debt and I had nothing from them stating what it was for and verifying it was correct. They said they would mail to me but that I owed this money. Less than a week later, they called again and I told them again I still had not received anything documenting what the debt was for. They told me it was sent a week prior and that I needed to contact my post office to see why I had not gotten the letter yet and that I needed to set up payments immediately. I told them I would not do so until I had received something from the post office and it was their responsibility to mail that documentation to me, not mine. A week after, I received another call and ignored it as I still had no documentation. A few days later, they called again and again I let it go to voicemail. A few minutes later, THEY CALLED MY WORK PHONE. This is harassment. The company has not provided documentation and now they are calling my work phone disrupting my job.