Did the National Institute for Humanities and Social Science use the services of a certain company (name furnished) on 7 July 2017, to travel from 4 Dover Street Westeden to OR Tambo airport and back; if not, what is the position in this regard; if so, (a) what (i) was the cost of each trip and (ii) are the details of those transported, (b) was the service provider by the specified company the cheapest travel option taken, (c) did the spending comply with (i) National Treasury cost cutting measures and (ii) the regulations of (aa) her department and (bb) the Auditor-General of South Africa and (d) who approved the (i) trip and (ii) payment?