Pfizer Senior R2R Accountant interview questions

Interview was arranged quickly and I managed to come on a very short notice, despite the busy timing at work. Interview was very informal, no structure at all. Questions were thrown at me randomly, i.e. describe how your closing day goes, after that what is you salary expectation, then again smth work-related. Manager interrupted me during my answers several times. Second manager was very nice. As I could understand from the interview and based on my feelings, everything went well and they were satisfied with my answers. However, I never got any response from them, ever. Neither positive, nor negative feedback, even when asked for it. Think it is highly unprofessional. They wasted my and their own time for nothing. No value in interview whatsoever.