Duram paint from builders richardsbay

I will never ever ever buy Duram paint again in my entire life. For starters the paint looked diluted and I stirred it for almost an hour. Then tried to b paint. It was like I never painted. The old paint underneath stood out. I took it back to Builder where I bought. Then they stirred it up then took it back home to paint. Same thing happened. I took it back to builders. They paint a small patch area to test it. They painted the same area 4 times still same bad result. They gave me a new paint then went home to paint. Same **** result again. I will never ever ever buy Duram in my lifetime.