I own a mercedes 280c; is this a transmission problem? on 2007 Mercedes-Benz C280

I heard a rattling sound when I would ride over bumps and now the car will not move 5 ft forward or backwards without jumping into gear and refusing to shift upwards to 2nd, 3rd, 4th....gear. It stops every few feet when trying to drive. It is not capable of being driven. This is a 2007 c280 mercedes-benz with 114,000 miles. We are the original owners.

Asked by for the 2007 Mercedes-Benz C280