I got a copy of my credit report and noticed a negative reporting from an unknown company ( Southwest Credit ) I disputed this debt with the credit bureau, because I do not know of this debt, who its from, when account was opened, and even if it is indeed my debt. I never received a debt collection letter from Southwest Credit giving me a chance to dispute or verify the debt, before they went and reported negatively on my credit report. 

Where did this debt come from, when was the account opened, where was correspondence sent regarding this debt, who is the original creditor, and I would like proof ( application, signed by me ).