Faulty Lacoste shoes that puts in soil underneath.

I bought Lacoste shoes at Spitz. <br> The one shoe is faulty, it puts in soil from the underneath so I returned the pair the beginning of last month, it went to the quality assurance checking it was checked and it was returned. I was told that the shoes were cleaned and no fault was recognised. The manager at Spitz told me to wear the shoes and if the same problem arose I should bring back the shoes. I wore the shoes and the same problem arose I took back the shoes and now I was told that there's nothing they can do I just have to wear those shoes in the condition they in.<br> <br> When I returned the shoes they were not even 3 months old and I only wore the shoes not more than 6 times.<br> <br>