Thorntons review: customer service

I go into this Thorntons every day 2 buy three Monster Energy drinks and gas. By the end of every week I empty the cooler of monster meanwhile there are cases piled in the back in the cooler but not stocked on the Shelf. So there has been two occasions I have went to the back to get the monster myself. Not thinking it would be a big deal because the beer cooler is open to the public as well. But then today I go in there get my monster I go to the counter, next thing I know the manager lady is looking at me saying excuse me I need to talk to you sir and she drags me off to the side then she continues to start cussing at me saying stay the f*** out of my cooler and you're lucky I don't ban you. I tried to explain to her nicely that I'm just trying to get a couple monsters to get my day started and if she would stock her shelves daily I wouldn't have to walk in there and get them. She continues to rant and Rave and cuss at me being adamant to never be in her cooler ever again. I told her no problem and walked away but there is no reason she should be talking to a customer like that especially a repeat good customer that spends a lot of money in there every day. To be yelled at and cussed at like a child is very unprofessional and uncalled for