Cashier gave me the change

Am here at creadlestone mall with A cashier with a name of Livhuwani Siphuma as a cashier she gave me R50 which was half cut

I bought in the morning now she is refusing to give me the right R50 now all the management its not even helping me out I even look like an idiot standing here

This is what we experience as the black nation when we GEt to this store i think its my second complain i complain about this store