MileagePlus Account Audit

I have had to request missing miles twice this year. Each time my account was credited more PQM's than I was entitled. The first instance was a missing fare class bonus. Instead of removing the incorrect flights, they added the flights again with the new fare class. The second instance was missing miles from a partner flight that does not qualify for PQM's. They credited the flight with PQM's.

Does United audit accounts at the end of the year? Will they eventually correct these errors (which are clearly in my favor)? I even tried calling the MilagePlus Service Center, but they didn't know what to do.