Toast Inc Senior Software Development Engineer In Test (SDET) interview questions

First two technical rounds. Post clearance of two rounds, Five mandatory rounds consisting of three technical rounds and two non technical discussions. Interview standard is good. I did not get update post seven rounds of interview. Got call after one month and asked for one more last round. After giving one more round also no update. Candidate will expect at least regret mail or some feedback. Not giving feedback post having 10 rounds , i feel its not good for any company.