With reference to her reply to question 696 and question 697 on 23 March 2021, (a) on what date did the specified SA Social Security Agency (SASSA)-led investigations commence, (b) what number of the specified investigations (i) have actually been resolved and (ii) are still outstanding, (c) who specifically at SASSA is conducting the investigations, (d) what number of people at SASSA are currently responsible for conducting the investigations and (e) how are the investigations being conducted?