CLICKS SOUTHDALE GIVING **** NOTES

The outrageous service I received at Clicks Southdale today left me lost for words. I went to do cosmetics shopping at our local mall clicks then I noticed I made 1 unnecessary purchase which I then decided to return. On returning the Nivea cream to the shop and was assisted by a cashier named Borite, I was given cash back and that cash had a R100 note that I paid no mind at the shop because I never ever imagined that clicks would give a me "****" note". After completing this transaction I made my way back to work in the same mall. It didn't take me long to notice that the R100 had some discrepancies and I went to check it properly in the banking branch and to my worst suprise it turned out the note was ****. I went back to clicks politely, with the belief that they will assist me the best way they can. On arrival I spoke to the cashier who assisted me initially and he straight told me that I didn't get the note from him, I asked for the Manager Simangele who made me feel like I was inconveniencing her staff because her tone was very condescending and careless, she told me that "if my cashiers say they didn't give you a **** note , then they didn't." ... I asked if they footage of her staff scrutinizing the note and she said there is none but she believes her staff and that's final... Mind this is a store that is in the mall that I work in myself and I got paid yesterday so this is definitely not about the money but the principle of it all. Why would I say they gave me a **** note if they didn't??...