car is 2003 2.2dti signum ive had her 2 weeks, it started the other day not opening or closing doors via key fob so i replaced battery read up on here saying to insert key turn to first notch then press door open nothing happened after about 20 mins it just started working i thought it was what id done. then the next day the key fob opened the doors but the car wouldnt start. turned ignition just one click coming from what sounded like glove box side, all lights came on when turning ignition no warning light so tried charging battery still nothing so i went and bought a new car battery still wouldnt start then after about 20 mins it started, then this morning key fob not working but car starts. just one thing when i open the drivers door with key when fob not working the alarm goes off till i put key in ignition and start. so im just wondering what to do next any help would be appreciated.