clio not moving at all because of automatic problem

am in Ghana and have a 2003 Renault clio with atomatic transmission which can be driven both manually and automatic.the car cannot move now cause the gear box sign appers on the board.if u jack one side of the tyre and accelerate it runs but if its down the gear changes itself from1 to 2 gear and moves into the nutral mode,with the car still not moving when u accelerate
can someone help me out with the solution

clio not moving at all because of automatic problem