Tim Hortons review: manger

I was in this Tim Hortons and I was getting a medium triple triple. I saw a male manger interupt one of his employees while they were asking a question, telling them to "just get back to drive thru." I also saw him yelling at his employees multiple times to hurry up because they were all too slow. No motivation at all. The employees looked very stressed and they were not treated fairly. It upset me very much as a customer.