RIGHTIO

I called them regarding a leak coming downstairs, likely coming from the shower. They came, charged me 100 GBP and said it was the silicon wearing off. The leaking never settled, called them again, came back and said everything was fine, no active leak. But the issue was never settling, then I called another plumber company, the issue was the shower plate was broken and this was the cause of the leak. After changing the plate I had no further problem. But now even with the invoice, photos, report from the plumber , they are refusing to take any responsibility for the expenses this has caused me. Of course they never have provided me with a formal invoice, despite I asked several times.