DoorDash Associate Software Engineer interview questions

Recruiter reached out on Linkedin, I was provided a link to book a time to chat. I was like, "sure, why not!" Doordash is hot. I booked a time. Few days before the time, I saw that the invite disappeared from my calendar. I went and checked the invitation email, I saw that the call was cancelled, WITHOUT any email notifying me or even saying why. They did not even bother to ask me to reschedule it, I guess, when a company is too hot, they could dump candidates to talk to other better candidates easily, "sure why not!"