xiaobaitu,please help with "Non-delivery of Green Card?"

It has been 4 months since my I-485 got approved; however, no green card was ever ordered or delivered yet. I called the USCIS, and they only asked me to wait for it. I've tried Infopass already, but no news from them also. I wonder if there will be any other way to make it happen sooner. Thank you for sharing your experience.