Casper interview questions

Shocked that Casper is an unprofessional company. Received an email to set up a phone interview, the manager never called. Reached out to notify them of not receiving said call which resulted in setting another phone interview. Person didn't call, again. Set aside time in a busy month where the end of the Fall semester is approaching to wait for a call from an incompetent company. Never experienced anything like this before and now know to avoid as a customer and potential employee.