Thought I was going to need it just before Christmas. Swapped over a vented cylinder to unvented with the cwst needing doing too. Connected all the three outlets from tank to main with lever valves, turned one of them on to find it was an open end left in the wall!
Wasn't on for long but damage was done. Customer went a bit quiet and atmosphere changed. Anyway, rather than leave it till the new year and the potential to get knocked on final payment, I sent an email asking for a list of damage etc and what they wanted to resolve the issue. Eventually they decided it was nothing to worry about but weren't overly pleased, despite it not being my fault really.
I've just today sent a bouquet of flowers as a further apology, plus they've emailed me saying all good, so if it does turn nasty later I can argue i've done all I could to resolve the issue and customer had agreed all was ok.
Had another chancer earlier this year as well, kept saying he didn't want to go through insurance because we had apparently left a drain off open slightly which leaked on a new carpet. I shot round, offered to pay for a carpet cleaner, which he refused.
A week later he phoned saying I'd left another one open, which I know for a fact we didn't touch!
Long a short, it didn't take long before he tries asking for money as reimbursement, I called his bluff and declined saying I'd inform my insurance company, he was trying to say that his carpet should be replaced from the previous incident, despite the offer to get it cleaned. I said the insurance company would ask why he refused the offer to clean it etc
He soon changed his tune but was such a pain the the arise I just hung up on him. Never done that to a customer before but he was just going on and on, repeating the same bull****, I lost my patience.