Sorry but I’m not really seeing how this is shocking. It does seem like you’ve needlessly spent rather a lot of time getting worked up over a screwed up delivery over the space of just a couple of days, seemingly making several phone calls and your girlfriend making a 32 mile round trip to some other address.
Packages sometime get lost and you might not get a resolution in the space of a day, especially when they might need to contact the driver/courier etc... it should only have taken a few messages so far and not really needed to occupy much of your time. I’d just wait and see what they come back with early next week and try not to let it bother you, these things happen occasionally.
Where did I say my gf had done a round trip? She works five minutes from the other potential address and our post has happened to go there before . It seems you may be getting more worked up than me.
Are you Andy Clark