Brussels, 23/10/2006 (Agence Europe) - The European Ombudsman P. Nikiforos Diamandouros has opened an investigation into a complaint made by the German mobile telephone operator O2. The company alleges that the European Commission failed to grant it proper rights of defence during a sectoral investigation opened six years ago concerning roaming service charges invoiced by certain operators. The Ombudsman is requesting that the Commission responds to the company's allegations before 31...