The caller ID came up as unknown. So I called them back on another telephone. They didn't immediacy pickup and have to assume they were running my caller ID through there data base which came up no avail. When they did answer they said hello can I help you? I asked if they would identify themselves and was told they didn't need to until I identify myself. Then I began to explain the FDCPA and got an immedate response in a mumbled voice of Frontline Asset Strategies, can I help you. I thanked them and said no thank you. Wrong number.