Home assignment, then interview with the vp r&d and team leader, then interview with the cto and hr, The cto ask me why didn't I complete 5 math units? and the hr told me in the end that they will back to me in 1 week but they back to me only after I send mail to ask about answer (2 weeks after)

A telephone interview of about 10 minutes, a general conversation and an explanation of the company and the position. Then a homework assignment of with Deadline of a week for submission. According to the assignment, they do not examine what you know but what you learn, so it would seem that they were interested in seeing if the candidates have the ability to learn quickly in a number of areas. After submission they contacted me by phone and said they did not proceed because the task did not meet their standards. A task of several days and I did not receive any feedback on the task what was not good and what I could improve. Whoever spoke to me did not introduce herself I do not even know if it was a secretary or someone professional. A total of 10 seconds of conversation, very insulting after all the effort. The minimum is to give feedback on the task. If you want to work a few days on a task or even a week and not get any serious feedback then apply for this company.