TeamSupport HR/Ops Manager interview questions

I was contacted by their HR to have a Zoom interview. Process has been quite fast (two calls in one week). I've been invited to the final stage. I never received any link or phone number. I've sent an email asking for updates. I got a standard rejection email one week later. They seemed nice when I e-met them in videocall and this unexpected behavior surprised me a lot. The whole experience left me a bad impression. I hope they will improve their recruitment processes.