There are very smart employees. Attentive, they will calmly explain, tell, and help. But, unfortunately, not all and often there are queues for service.
I came in to leave a complaint about the work of technical support. When talking to an employee (at the very left) I calmed down and realized that I had overreacted. The girl immediately entered the situation, sent an additional request for a call. The employee behaved with dignity, correctly and politely. Thank her very much