Address Mess

When we moved, the leasing agent told us that our new address is 18 Glen Eagles Drive.
I paid $66 to have our mail transferred to that address. Now we find out, that actually, our address is 18 St. Andrews Chase. We are on the corner of the 2 streets, but face St. Andrews.
The builder believes that our address is St. Andrews. The city believes that our address is Glen Eagles...
In the mean time, we are getting NO mail at all. Basically the leasing agent told me that it's my responsibility to straighten this out. Excuse me? I'm not the builder, I'm not the home owner... like the city is going to listen to me.
If the address is St. Andrews Chase, do I have to pay another $66 to move the mail again?
And where is our mail from the past 2 weeks? We are not even getting the flyers that arrive twice weekly. No one knows that we are here.
and of course, EVERYTHING is closed Friday, Saturday, Sunday and Monday for Easter!