I would remove the cam cover and engine mount. Then remove the top timing belt cover. I would turn the engine over and line the crank up so it locks on the pin then make sure the cam tool fits in. I always use a windy gun on the bottom pulley. Then hopefully the pulley will come off. If it does take the bottom cover off then use a spanner on the 2 cams and slacken the 2 cam Pulley bolts off.
These pulleys will be free floating now. Slacken the tensioner off and remove the belt and belt tensioner.
I did the wifes 53 reg focus and the bottom pulley wouldnt come off. I had to smash the bottom timing belt cover and mad sure I got all the bits of the cover out of the belt.
Now refit the belt then the tensioner. Put bottom t belt cover back on and pulley and tighten bottom pulley bolt. Make sure the crank is on the pin then tighten the 2 top cam pulley bolts. Remove pins and turn engine over to make sure the pistons armt catching the valves. Time engine back up and fit pins. If its all ok which it should be rebuild rest of engine.