As others have stated, "acts of God, civil insurrection, riots, strike, or war" are some of the standard disclaimers that will void a contract. Essentially, the situation is one in which the party cannot perform their legal obligation due to unforeseen circumstances over which they had no control. That being said, why don't you wait until your package is delivered, the weather and backlog situation has calmed down, and then call UPS and NICELY explain your situation. Somewhere up the corporate ladder, someone will probably help you out. But right now, UPS, and the airline industry are swamped trying to take care of the backlog nightmare, and the last thing they want to do is spend their limited resources dealing with people like you. Please don't take offense to that statement. You do have a legitimate complaint, but sometimes, timing and a pleasant demeanor are key to resolving a problem!