PROS discriminates - Solution Architect PROS Employee Review

Politics are game of thrones level. Better be ready for a little light incest to advance. I was blatantly told I was not hired for an internal transfer job because I already work at PROS, and the hiring manager didn't want to hire internal. I was also told I was the most qualified. No response from HR. When I had 5 different bosses over 5 weeks and wasn't sure who was my boss? No response from HR. Be ready for lots of performance reviews like the following (5 years in a row) "well your old boss was fired, and I'm new and not willing to go to bat for you based on our 2 months of experience. Better luck with promotion next year"