T-Systems Senior Software Engineer interview questions

First contact was a message sent through a mailing system, which I replied with my resume. Few hours later I got another message from them, asking about my english proficiency (my resume was written in fluent english). Two weeks after, I got another e-mail from the same recruiter, asking for my availabilty next week, which I replied. I got a response with the interview scheduled to happen in four days, sharing my resume with my salary expectaction with non-manager professionals that shouldn't have this information. At the appointed day, few hours before, the same recruiter contacted me (again by e-mail) asking to reschedule the interview because an important soccer game would happen around the same time. I politely declined.

Very bad process, they took my 3 technical rounds and in managerial round also he asked me to do code which is not my technology either. Very much disappointed with interview process.