7-Eleven

Went in today to get the $1.00 slurpee and paid for it but then used my cups I had purchased years ago to Carry my drinks out.as I was proceeding out the manager told that if I want to use my cups I need to pay the $2.10 price all cause she mad about something after I used the large cups only as the sign said and the other worker tried to say it was and extra large after I had to grab a cup and show him it’s a large. I do not like being scammed or have false advertisement or be called a liar I hope this reaches someone superior and has this store dealt with as there has been many issues with a lot of other things in regards to this store