It all depends on the officer handling your case and whether they deem it as urgent. Send the same email with proof to your processing office. I have seen urgent requests get processed quickly while others take forever.Proof are solid. The question is what urgent processing mens?
I called them, they said urgent processing menas processing time would be shorter than 17 months, opposed to normal processing time which is 17 months now!
Follow up by calling once a week.