HubSpot Entry Level HubSpotter (Customer Support Specialist) interview questions

I applied online through LinkedIn and received an email shortly afterwards to schedule a phone interview. The phone screen lasted about 20-30 minutes. I was asked some basic questions about who I was, my knowledge of HubSpot, and why I left my previous position. Then I was given the chance to ask questions, which I had quite a few prepared. One thing worth noting, is that while asking about the work shifts, I asked about weekend shifts. I had (apparently mistakenly) thought that I read somewhere that the customer support position had weekend shifts. The interviewers seemed a a bit annoyed with that question. Maybe because he had spoken to candidates before who really wanted a weekend shift? I was just asking for clarification myself. The phone screen ended with the interviewer asking for my salary expectations. And I was told that the answer I gave was "right on the nose". After the interview was over, I was told that I would receive a follow-up by email either later that day or the next day. That was yesterday, and I received the email today. It was a generic email telling me that they would not be moving forward with my candidacy. I'm not sure why I didn't pass the phone screen process, since it seemed to go okay to me. A generic rejection email is to be expected with most companies. But I was a bit disappointed, since the reviews here say that HubSpot prides itself in giving feedback every step of the interview process. I guess the phone screen isn't included in that. I am just a bit frustrated that I never got a chance to answer any questions about the job itself. Especially since I have the qualifications and experience for the position.