Family Dollar complaint: Unable to Cash Out

I would like to filled a complaint on family Dollar store in my area I was there on December 28, 2021 approximately 810 in the morning due to I was trying to purchase some pair of shoes but as soon as I was about to cash out the cashier register by the name of Tina stated to me that she was unable to except my hundred dollar bill. She stated that she couldn’t accept it because it was a large bill, She never gave me a real reason why she couldn’t except that she just said it was just a Large Bill, Her defense was just that the store just opened up at eight which obviously I was aware of that’s why I was there trying to purchase some shoes because my she’s broke and I need shoes obviously for work. There was another person in the store with her according to her she was a supervisor and she’s the one that handles all the complaints I don’t think she was but that’s just a title she gave herself. She never told me her name all she was doing was just in the computer by the looks of it looks like she was looking at her paystub. As a supervisor of a large corporate office you would think she would at least explain to me why Miss Tina could not except the $100 bill she just pretty much stayed the same thing that Tina did was just stating that the store just opened up that’s not even a good reason, so the store just opened up and if somebody comes in with cash you don’t wanna except the cash I just don’t understand.