Back in November 2016 I fitted a bathroom suite for a couple then four months later they messaged me to say there was a damp patch on the kitchen ceiling under the bathroom, but stated that it was discovered that it was an old leak, nothing to do with the bathroom I fitted. A month later I received a message to say they believed there was a leak in the bathroom then later that same month messaged me and made reference to the fact that they clean the tiles with vinegar which I am led to believe dissolves grout so I believed this could be the reason for the leak. Three months later they complained about leaking and how it had ruined their kitchen ceiling. We went through my insurance company to claim for the kitchen ceiling to be replaced. Now over a year after the claim for the kitchen ceiling, and two years since the bathroom was fitted, they have sent me a letter with details from another plumbing company saying that everything I did was wrong, it has all been ripped out, and demanding £8,000 to have all my 'poor workmanship' put right. I am going to seek legal advice, but just wondered if anyone had had a similar situation and what the outcome was?