Zero customer service

Drew money from Sibiya casino. Found damaged money amongst money drawn. Went to cashier and reported it was sent to mvg counter. They informed me to take it up with fnb. Asked for manager who came and told me the same thing. What proof have I got when I go to fnb. Casino has cameras on site that can confirm. Fnb does not. Handed in platinum card. Good bye zero customer service. The R200 is not the issue the zero customer service is.