Welcome to the Community!
I can only imagine how frustrating your experience has been. It's a good thing that I was able to pull up your records using your community details because it allowed me to check for the modem's delivery status.
Based on the records of Startrack, they attempted to deliver the modem yesterday but there's no receiver. Your modem is currently available for pickup at the Post Office. I also sent you an SMS providing the location where it is held and the consignment number.