explacation my discontent FIX IT PRO pen

this pen is ineffective addition it removes kidney all, even small scratches on metal color or sizes normal color
nothing happens on the visual point they are still there.
the transparent liquid pen does not take the color of the vehicle.
for info
if we look at the comments of many people complain about is lack of efficacy.
by happy at all I sent you the pen is I hear a refund quickly from amazon.
for the first time I order at amazon ??????????