Apisero Java Software Developer interview questions

Hiring process was very unprofessional. It took more than 1 month first of all..after clearing all the 3 round the hr (vanshika agarawal ) said you have been selected and we will sortly send u a offer letter but after few days she called and said their ceo wants one more round of 15 mint.. than i agree for that but in 15 mints the time they gave interviewer came after 25 mint and he just asked me about my project and he said he is done. I requested him to take his time and interview me. But he said he is ok.. Later i got rejected mail..i dont knw juz asking about project how they decided after hr already told that she is juz releasing an offer 1 month of full time waste..worst organization i have ever been interviewed.