Actually... there is a way! and i feel quite incredible for figuring it out! hahaha. Only on iphone/ipad though...
Okay so first, you want to go on facebook (on an actual computer) and go to Settings>Apps>Show all (logged in).
Find Sim City, and hit the "X" (Remove)! it will ask if you're sure, because it will remove all app data. And this is exactly what you want.. if you want to start completely over.
Open up you Iphones/Ipads Settings > General > Usage > Manage Storage > Sim City > delete app.
Next, go to your Game Center, and open that baby up. Then you go to Me > the "#" Games Bubble > then find Sim city again... left swipe and click remove.
Now you have to redownload the app. From there you should be clean of your dirty SimCity past... you're welcome 😉
