My engine light keeps flashing and revs keep going up without accelerating

What is your question?

So my car engine light was on and we checked the car and put AT oil in (auto transmission) as it was very low. Servo guy checked it and said all looked good then we drove home and the light kept flashing and revs would go up even thought we were parked at the lights. Any idea on what this maY be? Car has no leaks.