Dollarama review: young cashier man disrespectful

Hi there

I would like to complain about a cashier (tall young man, brown hair) working at the dollarama on Bathurst and Bloor, downtown Toronto. I went at the dollarama on Dec 5 2018 at 6pm. When I got to the cashier with my basket full of products the cashier started to scan the products. I moved one of the product the cashier scanned to be able to put my bag and so I can fill my bag with the products. When I moved the product, by accident, I accidentally scanned the product the cashier just scanned (since the scan system is on the same table as where you put your products and where I put my bag). Like I said I did not do this on purpose but the cashier yelled at me saying "don't do that!" and started to have an attitude towards me very angry typing on the machine to try to remove the product I scanned by accident. He yelled at me again " it is busy tonight!". He had to call the other cashier (a woman, probably the manager) just beside him to help him out to remove the product as he needed a code to do so. While calling her he took the product and trow it back to the basket and he trow the basket on the floor behind him. I could not believe that he was yelling at me and kept having this bad attitude. I had to tell him to stop having this bad attitude towards and stop yelling at me like if I am a dog. And he start laughing. I want to complain about the bad customer service in this store . This young man should not be working in this store if he cannot handle busy days. He should be fired for such disrespect towards customers. Hope Dollarama is going to take action and investigate as I am sure I am not the only one that had such bad experience at this location with this young man.