Regarding Wits, if you are undergraduate (i.e. do not have degree yet) best you contact wits admissions
contact details on
http://web.wits.ac.za/Prospective/Un.../ContactUs.htm
if you already have a degree and want to do a post grad then different contacts. Wits did not recognise any of my flying/industry experience for a post grad degree (e.g. MEng, MSc, GDE). Had to produce a recognised degree and no extra credits given for flying, licences, misc. coarses such as Radio, CRM, Dangerous goods etc.
If you have the cash, try the correspondance coarses of uni's in the USA such as Embery Riddle, they recognise flying etc
www.erau.edu