XXXX XXXX call a third part number XXXX and left a voicemail, detailing what I need to do, but not Identifying himself as debt collector or what collection agency he works for. This third part now knows my personal business. XXXX XXXX also called my number, and on the caller ID it was masked as private. He leave a voicemail, but again did not identifying himself as a debt collection. The only thing he stated was, there was a compliant file against me and to call XXXX and reference # XXXX before further action it taken against me. XXXX XXXX then called me at work and identified himself only as XXXX XXXX and tried to obtain personal information about. I asked if he was a debt collector and not to call me at work. He replied " Yes '' and " Why? ' I explained I could be terminated and XXXX XXXX proceeded to collect on the debt after he was given this information. XXXX XXXX actions are harassing and believe this collector/agency has violated FDCPA regulations.