Did the National Institute for Humanities and Social Sciences use the services of a certain company (name furnished) on 4 July 2017; if not, what is the position in this regard; if so, (a) what (i) is the total number of persons who were transported, (ii) are the details of each person who was transported, (iii) is the total cost for each person who travelled, (iv) was the total cost of the trip, (b) was the service that was provided by the specified company the cheapest option, (c) did the expenditure comply with (i) the National Treasury’s cost cutting measures and (ii) the regulations of (aa) her department and (bb) the Auditor-General of South Africa, (d) who approved the (i) trip and (ii) payment?