I received a phone call from gulf coast collection agency about a debt they said I owed. I said that I was the person that they were looking for and asked what the debt was about. he asked for personal information which I would n't provide unless he told me what the debt was and told him again that I was the person and he called me and without him verifying information I could n't give him any personal information at which time he said unless I gave him personal information he would hang up which he did and then posted negative information on my credit report. I want the negative information removed from all reports.