On XXXX/XXXX/2015, a collection company named National Credit called my landlord trying to locate me concerning a debt claim. The debt in question is from an old XXXX XXXX account which is currently being disputed. The caller did not announce they where a debt collector and pretended to be a potential employer trying to gain information concerning my address/employment. I am unable to work due XXXX within the last three years. The constant harassment from this company is extremely stressful and totally unnecessary. On a previous occasion, this company told me to sell my belongings in order to pay this debt when I told them I had recently had XXXX and was unable to work.