Eaton interview questions

I had given interview for Engineer position. I had given all rounds of interviews. Overall interview experience was pleasant. Equal amount of challenging and easy questions. But my worst experience was with HR,they were not ready to negotiate nor giving any value for expected salary as per company standard. Moreover,even after sending 2-3 mails regarding result, I did not get any reply. My humble request for HR recruiters is to atleast have the courtesy of replying back even if its a rejection. A candidate is spending his/her time and efforts for the interview so please think about and do the needful act.