2004 Vauxhall Corsa Easytronic gearbox

Hi my 2004 Vauxhall corsa has just been rescued by a breakdown truck and taken to a garage in Spain. For a few weeks now it has had an intermittent fault showing F in transmission box on the dashboard however if I leave in N when parked it seemed to clear and would allow me to start the engine - on Monday however it started as normal then after about 5 miles when I was trying to pull up a slight hill it refused to change through the gears - I tried puttin it into manual and also into neutral then back into drive but nothing eventually I coasted to a halt and turned off the engine then I could not get it to restart the F showed again and I had to be rescued - I would really like a guide onto what the problem could be and what to expect to pay as I am in Spain and don't want to be ripped off. Many thanks Jayne