Arguing with me

Bought a teddy bear that cost me 69.99 . Paid with R100 note she gave me only 10 note and the rest was coins that were making up 20 imagine R1 and R2 nw Im asking her to get change from colligues as I do not want lot of coins she told me money is money her colligue offer her 20 note she said she musint worry shes got it. So im asking her why you giving me coins after i ask for note and you telling me money is money woow im very upset cos her answer is why im going on she mos gave me the money she teklling me just go im aasking her if shes crazy she said im crazy too. woow for simple asking sor a note not a coin???