Car should be ready this weekend hopefully. I want to get a detailed explanation on the work completed. Hope it resolves the issue.
If they did NOT pull the motor and replace the crankcase seal, you might want to print out the above pictures to show them that this IS THE ONLY place for oil to get into the adapter housing.
Hopefully they pulled the motor and replaced the seal. These are not normally a high failure item.
Let us know the details after you pick up your M3W.