I usually change strings after half a year, just the one and only D'addario 45-135. But if i feel sooner they are worn, i do it earlier. The recordings are serious stuff, so think seriasly to change for the new before rec.
If You would be asked to equalize a bass brand (luthier companies count) to quality by a car brand, what would You say? The question is ''car'' - Aston Martin - Bass ????
It's delivers fault. You can't just leave that kind of thing at the door and drive away. Couldn't they wait 10 minutes for Your GF ? I would start a criminal issue about them.
I think it would be normal for Fender to make a 6 string jazz bass. Yes, it will look bigger, but those who like jazz bass design and want standart 6 string, would be happy.