What do you mean by jumping forward when putting foot on the accelerator? If it's an automatic, then that's what's supposed to happen. As the throttle is applied, the power increase makes the vehicle move off. An automatic actually wants to creep all the time, so needs to be held on the brake all the time.
It doesn't have a duel mass flywheel, so it that can't be the issue.
But more information on the problem is needed.