Repair on my bathroom

2 Years ago I installed a new bathroom. The tiles I bought form Builders were faulty and Builders replaced the faulty tiles and installed the new tiles after 6 months. I was not satisfied with the builder Builders selected to fix the problem. <br> <br> Some time has passed and the job Builders did is going to cost me more money because they did not seal my shower floor properly and water damage is starting to appear against the walls.<br> <br> The tiler that installed the tiles the first time around used the right sealant for the floor. But I feel after Builders come and replaced the tiles, they did not installed it properly.<br> <br> Beware.