Some people are just idiots. A smartarse comment would have been tempting. Something like "sorry your item hasn't been posted yet. You paid on Thursday night after the post office had closed. I tried to call the post master to get him to reopen so your parcel could be posted like you demand it should have been, but he didn't answer. I could have broken in myself, but I am still on probation from my past post office break and enter.

As it is a 4 day long weekend this weekend, whereby nothing is open, I have decided that as you want your item regardless, I'll hand deliver it to you. As I don't have a car, I will need to walk, so shall see you in about 3 weeks. All I ask in return is a cool drink on my arrival. If you would like it sooner, then you'd best be doing what the rest of the country is doing, and that is waiting until everything reopens on Tuesday so your item can be posted. Feel free to open a dispute and leave negative feedback. In regards to the feedback, please make sure you use capital letters and punctuation so you can express how angry you are at me. Thank you, get stuffed, signed me". 

Edit: all PO's were closed on Sat.