Geox shoes: are they really waterproof ?

Geox shoes are all over the place here in Germany. They claim that their shoes are breathable by means of a special microporous membrane which, "when placed in a perforated rubber sole, allows transpiration while keeping external humidity out". In other words: your feet don't get wet from the inside and your feet don't sweat.

About three months ago, on a slightly rainy day I noticed that both my feet were getting wet from the bottom and I was most sure that it was not from my sweat. I thought at the time that I perhaps stepped in a puddle and the water got in from the sides. But on another occasion my feet get wet again. This time I took out the inlays and noticed that they were wet and had a moldy look, as if this had been wet quite often before.

I wrote to the Geox Deutschland GmbH in Munich on April 18 regarding the matter, but they have not answered yet. Called at their Munich offices today, and the representative told me that I should just wait, she was sure that they will look into the matter.