Tyk Developer interview questions

I got invited for an interview with a recruiter, we had really nice chat and she told me she would get back to me to schedule a tech interview. I got no response from her for 10 days. Then she emailed me saying she was busy and they won't continue with me further, the reason she named me for rejection was as she said my poor tech skills which they never checked (since I hadn't any tech task or interview) So recruiter ended up somehow measuring my level and provided this "feedback" actually insulting me. This email was rude and not professional. The things she mentioned could not be measured by her at any level.