Panasonic Account Manager interview questions

I had one panel interview, then at least 6 meetings with individuals There were two rounds of face to face meetings. Ultimate role was decided on a presentation that I needed to review with hiring manager.

Had an interview in their Mississauga office with hiring manager and one more staff. No follow up email, no call, no feedback. Even after I tried to follow up by email with HR manager Sandra B. there was no response ever. I find this disrespectful and absolutely unprofessional attitude. There is nothing wrong to inform your candidates about the results of your interview.