Refused to take my money and bad food

I would just like to warn people of Calisto's Town Square. Last night (25/06/2015) my fiance and i went there and orded a half chicken and chips and a prego roll and chips with extras.. the total cost was R115.60.. As i alwasy do, i explain to the lady taking my order that i would like my chicken to be very well done and i also explain to her that i don't mind waiting for as long as i must because i want the chicken to be well done... Then it was time to pay, I paid with a R120, Thandi then tells me that she wont accept my R20 because it is old and scruffy looking and her manager will shout at her for accepting it... I mean it wasn't torn or a broken note... So i call the manager who is also running all over the place like a headless chicken and he says it's not true... He says Thandi is lieing... Now who is not telling the truth here... If Calisto's does not want my money, i know of a Nando's just down the road that will accept my money... Then the best is yet to come, after waiting 45minutes for our order, i get home and guess what... I get chicken that is still raw on the inside... So i threw the chicken away and ate the chips... what a waste of my money they didn't want...