Thank you for sharing your experience with us. We appreciate the time and effort you dedicated to the assignment, and we understand how frustrating it can be to feel that your work has not been acknowledged. We take your feedback seriously. To clarify, our assignment guidelines state that candidates should spend no more than 4 hours on the task to ensure fairness across all applicants. Every candidate receives feedback on their submission, highlighting both strengths and areas for improvement. We take the time to thoroughly review each submission to provide constructive input and are open to further follow-up if needed. Thank you again for your valuable feedback.