OpenBrand interview questions

I was asked 4 questions by a panel of 3 men and a female (not physically present but on some type of webinar). The conference room was not available so I was interviewed in a room with 2 couches facing each other. It seemed very informal. After the interview, I sent them an email thanking them for the opportunity and I was GHOSTED. It was the most unprofessional experience I have ever come across with a company. Most companies that I interview with would send an email stating that they will not be moving forward with me...I was IGNORED. Very unprofessional. I would not want to work for a company that treat anyone like this.

I started with a phone call from the director of product management and she was super nice then she set up two interviews ( informal and formal) where I've met the team and they were super friendly and you can tell that they have a great culture ( That's why I'm giving two stars ). After that, I haven't heard back from them even after sending an email asking for feedback. I found that so unprofessional.