Allsups Convenience Stores

Ok this happened today 09/05/2022 at the Allsup's in Clovis on llano Estecato and prince me and my sister stopped to get a drink we went in and got two cherry slushy we put them in tallsup cups not thinking it mattered it might be a little more being the cups are a little larger but not much we went to pay and the cashier tried to charge $12 and change for the two drinks when I asked she very rudely says that's because you put them in tallsup cups they don't go in those cups they have their own so you get charged this I refused and left the drinks. And left the store so now not only did the store not get the money for the drinks but the waste of the drinks to be thrown away and I will not be repeating my business there but I e be sure to eat everybody I know about this I dot ije to be this way but I have never been treated so bad by a customer service person in my life