Call your doctor's office to see if they have yet received the report. If they haven't they'll get a lot more attention than you will at the imaging center. If they have you are welcomed to let them know you should have already heard from them (the doctor's office).
Call the Doc who ordered the test. The MRI place likely cannot tell you anything.
Also many hospitals now have everthing online now. I can log in and review any test results any time. In fact, my last couple I read the results before the office called to inform me of the results.