Tired of paying excess payments for the same problems

Tired of paying insurance excess for the same problems. In 2016 we had a leak in our bathroom,outsurance had detected the leak to be in the shower,we paid the excess and the leak was eventually repaired.In 2017 we had realized that their is another leak as the walls were getting molded and the floor tiles. were heated but we were not sure were the leak was.Outsurance came through and advised the leak was under by the tub,the tub was removed and placed in my shower cubicle, they then advised the link was not under tub it was in the shower.My entire bathroom was stripped and redone,the leak also affected my kitchen resulting in cupboards been replaced.After the bathroom was done,not to our satisfaction.We were also advised that water proofing was done. This was complete in March 2017.A year later we picked up a leak in the shower resulting in high electricity bills as the leak is currently from the hot water taps.The kitchen is also affected as the water is leaking from the tiles and passage is starting to walls are starting to bubble.Outsurance had sent a leak detector and advised the leak is in the shower and we will have to pay an excess again as the leak is in the mixer and previously was at the bottom of the shower.The company who had completed the bathroom,Binare Plumbers,had completed the entire bathroom.And now another leak has appeared,how ridiculous is that.This leak had clearly occurred within a year of the work been completed,its only recently that we had picked up the leak.I am not willing to pay another excess for incompetence.