Personally, I would just keep on your loan officer (or whoever you're working with for the loan) asking about status. Sadly that's about all you can do.
How long has it been that they've been "looking" ???
Another thing - side note - Streetlinks/Assurant is a larger company, and no offense, you're not the only one they're working on placing an order. Maybe, for whatever reason, your order just hasn't been looked at yet. But I have a feeling, again as the others have posted, it's more about the fee the AMC is offering the appraiser(s)
Hang in there, you'll get a call