official said it was not the practice in cag rejecting the stel offer on the argument that this was withdrawn was challenged by mps who said the company had actually won the case in delhi hc singh got annoyed as noncongress members pressed him and his replies got increasingly testier especially after gurudas dasgupta warned him that he could be hauled up for breach of privilege if it was established that he had misled the panel asked about a document signed by deputy cag rekha gupta stating that singh should come to the audit agencys headquarters to sign the report he cryptically answered that the noting was self explanatory on evaluation of losses singh said he had cost indexed likely loss of revenue but the final figures were arrived at by his superiors in his draft report he recommended exclusion of loss calculations although he had done the maths he added both congress and bjp members found singh to be a somewhat inscrutable witness as the former lead investigator into the 2g scam made varying statements he argued he stood by the march 31 2010 draft and while he also said he had signed the final report he did not give direct answers about whether he thoroughly read it singhs testimony sets the stage for a crucial meeting of the jpc on tuesday when cag vinod rai is to appear before the committee and is certain to face a barrage of questions on what his former subordinate has to say rai has indicated to another parliamentary committee the public accounts committee about singh being a bit of a loose cannon singh said that in his draft he had calculated a likely loss of rs 65000 crore on basis of telecom firm stels offer but this was later withdrawn by the company the other notional loss keeping 3g values in mind was a little more than rs 1 lakh crore after the meeting jpc chair p c chacko said singh had stuck to his part of the report and that remarks and conclusions on telecom ministrys dealings with finance ministry were added later the presumptive loss is a mathematical calculation chacko said