This is because, under the current Citizenship Act in South Africa, you have to first apply to the Department of Home Affairs for permission to get another citizenship.
Se ke ka ntlha ya gore, ka fa tlase ga Molao wa Boagi mo Aforika Borwa wa ga jaana, o tshwanetse go dira kopo kwa Lefapheng la Merero ya Selegae go bona tetla ya go bona boagi jwa naga e nngwe.