Worst management, they called me for interview and...

Worst management, they called me for interview and went through around 7 round. Telephonic, 1:1, 1:1, written, 1:1, 1:1, ( 1:1) but no response. It takes around 17 day's. After spending time to go out of city around 40 km and preparing for this interview for around 17 they didn't respond, before that they will call every time.
Please don't waste your time, petrol, loss of pay in present office if working and other interview opportunity.