AbbVie interview questions

Initial HR screen followed by couple of phone interviews with the team. The team I interviewed with was great, typical Pharma BA questions regarding requirement gathering, validation and deployment. My negative experience because of the HR - 1. Initial HR who screened me left the job, follow up emails bounced. Someone should have been a back up if the HR was supposed to quit. 2. The new HR contractor was not at all responsive, absolute no response to emails or calls. It took almost 6 weeks for the interviews to be set up after the HR screen and some kind of response would have been appreciated. 3. I had applied for the couple of positions and HR did not notify which position I was interviewing for even after asking multiple times. I asked this question to the interviewing team. 4. Even after I received rejection, HR did not know the status of my interview. Frustrating process and hoping other folks don't have to go thru the same.