Horrible experience I had(i"m a fresher)...Even Af...

Horrible experience I had(i"m a fresher)...Even After clearing all the rounds (total 4 ROUNDS) and finally the HR is abscond. After 1 month i make a call to company .Then one of the new HR picked.he said u have to come again for another round.so i went again for final round and then HR informed to me i will schedule a last round then will inform to u .Again i went to final round .Finally at the end of the day HR said we r not going take u simply(For no reasons). i don't knw what's going on there.