so i sent my RFE to nebraska P.O. BOX. they attempted to deliver the package at 2:00 AM THIS MORNING. well no one was there to sign it. i just called the USCIS and she told me that i shouldn't have sent express because express if for 'live address' like someone has to be there to sign it. long story short, its package is sitting in the post office for 5 days till someone claims it. so should i just have to wait for it to be sent back to me or will someone from nebraska service center will go and get it???

looking for some input!