Prominent paint is *******!!!

Very very poor quality paint, literally peels off when exposed to water, when i got one of their representatives out to assess he told me i painted over dust, ive been painting for over 30 years i know how to clean a paving before painting over it. Long story short, bad quality paint, bad service, R1300 down the drain because they will not replace it or refund me, apparently its my fault that the paint peels off when exposed to water. I dont recomend anyone to buy any prominent paints they are utter *******!! Dont waste your money go for something else.