Amazon Delivery: Prime Service? Just Not on Sunday or Monday

I ordered some electronics through Amazon.com on a Thursday in the early evening. Since I was leaving the city on Tuesday, I paid an extra $8.99 to have the package delivered with "Two Day Shipping - get it Saturday, Jan. 28."

The next day I received a confirmation email that the package "has shipped. Arriving Saturday, January 28."

Checking with tracking, the original expected delivery time was Saturday at 5:00 pm. This was revised to Saturday before 8:00 pm, so I waited up until that time. It did not come.

When I complained to Amazon, I was told to contact FedEx for an estimated delivery time.

Well, surprise.

I was just told that "FedEx Home Delivery" does not open on Sundays or Mondays. In other words, the earliest I can receive my package is... Tuesday. The day I am leaving the city.

Dear Amazon: 

I am asking you to clearly state that your delivery service does not operate on Sundays or Mondays. So really, the two day service is clearly a TWO OR FIVE day service if your delivery service happens to fall on a Saturday. In other words, if delivery is late, it will not be late by one day, it will be late by three days. 

Your customers can then make informed decisions. Better yet, dump FedEx and find a company that works on Mondays. 

Yours truly,
The Obsessive Researching Mommy