Openreach Reviews Openreach 629. Write to us with a complaint | Openreach DSO & HLC Front Office I would like the information in Excel or CSV file format listing: 2.1 The date of the complaint 2.2 The subject/category of the complaint 2.3 The action taken by Ofcom First, by way of background, Ofcom has imposed a range of measures on Openreach to CEO:Technology, Service & Ops.