ServiceNow interview questions

Very bad experience. Initially I had 3 skype rounds from US. Then 3 F2F for which I went to their office. Again they invited for F2F with their director and HR, so 2 more F2F for which I went to their office again. The HR told me they will issue the offer letter within 1-2 days. But no response from them even after 2-3 weeks. The consultancy told me that the person to decide salary is on some training, which indicated that I am selected. Finally I came to know from the consultancy that I am not cleared the last round with the director. ServiceNow (Service now) didn't even bother to inform me. The director who took the interview in the final round didn't have my resume neither asked me for one. He was just asking some random questions not knowing who/what I am. I sent them an email saying it was really a bad experience and told them to show a minimum courtesy to inform the candidates about the status. They didn't even bother to respond with an apology.