Did you email them?And yes it takes them i think in any visa office 2 or more weeks for a reply.I sent an email 2.5 weeks ago still got no reply.When does your status expire.
And i dont talk down im just straight forward.I just say exactly what the manual says.Ex people ask if they should put down children on their app if they dont even see them .When it clearly in the manual states you must so then i send them the exact quote.
Or there are 10 messages everyday asking the same thing can they bring their spouse here to stay while the PR is in process,the same answer all the time you can apply.
But back to your question i think a lot of people including me have contacted the visa office and its the same thing everytime they take 2 or more weeks to reply.
And i guess its up to you if you apply for the extension,wait here out of status (which i would do as it should not be much longer) or go back to the states and wait trust me i feel your frustration and i would be going crazy too.
But email them and maybe you get lucky and they answer right away.Get the local MP to call them they will do an inquiry for you.Call Mississauga and explain to them what is going on.
But seriously if it was me i would just stay and wait,