Dulux Metalshield Multipurpose Spray Paint

I had some guys put in a colorbond fence and they used this to touch areas, after a few months it went super chalky. They've now gone out of business and I'm left with a chalky mess of a fence thanks to them using this product to touch up various areas of the fence.

This paint is terrible. Goes on like chalk dust, comes off like chalk dust. Used over 3 cans on the transom of an aluminium boat that had been etch primed and sanded smooth. 2 coats, both felt like dust after drying for two hours and could be wiped off with your hand. Ive used cheap $4 cans from pricebusters that have better quality paint. Ive always used White Knight Rustguard but thought id try Dulux, bad mistake.

Recently installed a Colorbond dividing fence. When job completed I acquired from Bunnings 2 cans of Dulux Industrial Metalshield multi purpose spray paint with identical colour as per fence Pale Eucalypt. Two weeks after application the colour faded to an almost white. The fence now appears as though it has been graffitied. The Dulux company provided an incoherent and implausible response.
Caveat Emptor - Dulux have produced a product that is intended to deceive. I urge consumers to keep away.