AMAZECH SOLUTIONS UI/Angular Developer interview questions

They called us for Walk in interview and i got selected for both rounds and Tech interviewer was impressed with my skills and after 1 month they are telling i didn't get selected simply after i made phone call to HR. It looks like they are playing with candidate time. I didn't got any interview feedback also via email. They are the one who invited me and i got selected in first two rounds but after 1 month informing that i didn't get selected.