can anyone help me my cav 2ltr cdi has a bit of a funny starter problem.

When i try to start it, it will sometimes sound like the starter is turning then it will change to a droning noise and the car won't start I then have to try again and it will start or it might do the same again

any help would be greatly Appreciated

p.s anyway had problems getting in touch with ccmotorsport or waiting on goods?