SpaceX Project Manager interview questions

I had three phone screens and then an on-site interview. They flew me down and I had a 45-minute presentation. I had thought it went well. After a few times of reaching out, I had not heard anything back and accepted an offer elsewhere. After almost two months, I received a generic rejection letter. After all that, they don't follow up and you eventually get a generic email. I would have rejected the offer as my other offer was better and I won't be worked to death.