Mobile phone billing software group eServGlobal has warned it will report an EBITDA loss of A$3m after restructuring costs and a 13% cut in headcount since the start of 2009.Earnings before interest, tax, depreciation and amortization (EBITDA) for the full year ending 30 June 2009 will be A$3m, but a restructuring charge of A$6m will push the business into the red. It also blamed a predicted drop in revenue to between A$150-155m versus A$177.9m in 2008 and A$153m the year before. Cost saving are expected to be about A$10m."Market conditions have continued to be difficult and telecoms operators are postponing investment in network capacity," said executive chairman Ian Buddery."eServGlobal continues to have no debt, strong cash reserves and a strong pipeline of organic growth opportunities."In a separate statement, the group said it and partner Convergys had won two contracts to supply real-time convergent charging and billing to telecom operators.The deals are with a leading mobile operator in the United States and a fixed line operator in Indonesia.