nasty teller at pnp

I'm saddened by the treatment I received from employee working the front kiosk. While making a routine purchase at the till she grew impatient, evening raising her voice at me then walked leaving me without an explanation or the item I requested. I asked to know what was going on and why she behaved so rudely towards me. I was ignored while she mumbled something to a colleague who was helping with my purchase. Furthermore I'm puzzled how the manager chose to deal with this. It was as though my concerns weren't be heard. I chose to walk away and continue my grocery shopping. I'd like this issue to be addressed.