Deutsche Bank interview questions

First, let me say Deutsche Bank may be a great place to work, however, my candidate experience is less than satisfactory. I have applied for a number of jobs and most of them have been rejected by the ATS, even jobs I have experience in. My most recent experience resulted in 3 rounds of interviews. I believe I nailed each interview. I was told I would hear back in a few days. A week went by, and I emailed the recruiter and was told an internal candidate had been chosen. I expressed my disappointment. The following week, I was told after talking it over with hiring managers again, that I had been selected. However, the salary offered was lower than my expectations and they would not negotiate for 5k higher which was still in the salary range listed on the job description by Deutsche Bank. Before I received the email about the offer, a recruiter called me and said she was going to review my application with me. I was placed on hold for 5 minutes, then the call disconnected. I tried calling her back multiple times and was unable to reach her. My candidate experience with Deutsche Bank has been horrible.