Worst experience of customer service

I bought their x2 20 litres of their products by Franklin Hunt on the 05/09 to paint my house. The house was painted on the 06/ 09 during a nice fine weather. After 2 weeks the paint started peeling off and funny at the front of the house only. It frustrated me thinking that I paid so much for the paint that lasted only two weeks on my walls and which stats the guarantee of 5 years. I contacted the Hardware where I bought the paint, which consulted the necessary person at the supplier. I was told that the technician said the problem is a caused by a damp walls. I told the lady that that's not true because I wouldn't be that stupid to paint damp walls, I know that the weather was perfect for painting and if that was the case the whole house should be peeling off. But the paint is still fine at the back and side. Then it was their words against mine. I felt that I was treated very unfairly because no technician was sent to my place to assess the walls they talked based on the pictures I sent. The lady then told me that she will pay the paint from her pocket which is 5 litres and knowing that I bought x 2 20 litres makes me angry. That means I spent on 20 litres for nothing, I gave away my money for nothing. I mean I had a choice to buy Dulux, Homestead or Fire Earth paints but prefered to but their supply which I regret. The service I was given is uncalled for, I had every right to complain if I'm wasnt happy with the product. I wasted my money on paint and on the painter, now I'm left with only 5 litre that Im not sure if it will cover the damage because it's getting worse every day. My house looked nice for only 2'weeks now it looks like an old abonden building. I'm so disappointed with the service. If I had to rate their service I would give them a zero.