I select the Y Location ( Body ), X Euler Rotation (Body), Z Euler Rotation (Body) and then delete them. But as soon as I move the ball and the next key frame is automatically created, they all reappear and I have to keep deleting them only for them to come back every time a new frame is made. How can I delete them permanently?
Check what keying set you are using.
'available' will only key the channels that already have keys on them. So if you delete an entire channel (not just a keyframe) it will stay deleted.
But if you are using 'LocRotScale' or something similar, it will re-add any channels that are missing.
Hope that makes sense H&T.