Box Software Engineering interview questions

Terrible interview process. I was told to do an OA where they asked a couple hackerrank questions that were related to what they do which was nice but upon completion, they took long to reply and eventually told me that I had not completed the OA even though I did. I showed them that I did infact submit it and they then admitted it was a mistake on their end. They then said they’d get back to me and never did. I sent them a message asking for updates to no response. I emailed them again a week later and they then told me I was not selected. Overall very poor communication on their end.