MuleSoft interview questions

The interview process was sped through quickly and the recruiter was helpful, which is the only positive of my experience. However, through various rounds of interviews and assignments (multiple phone interviews, assignments, assignment presentation, onsite interviews), the rejection came in the form of a cold email. Mulesoft could at least have the consideration for a phone call to reject a candidate that has taken time off to go through through several rounds of the interview process. It does also make me wonder if they were just trying to get free solicitation and advice...