Sanjay Bhandari, a defence dealer being investigated for allegedly buying a benami or proxy-owned house for Robert Vadra in London, and Aviation Minister Ashok Gajapathi Raju's top aide Appa Rao, exchanged 355 phone calls over the last one year, according to documents collected in raids last month on Mr Bhandari. Appa Rao, who is officer on special duty or OSD to the minister, denied that Mr Bhandari had made hundreds of calls to him; they were so few that he could not recall an exact number, Mr Rao said.