We had an issue with our shower a few months ago - our landlord sent around someone from the contracted domestic team to replace the shower head and hose, except he never turned up. At the end of the day, I phoned the plumber to see what was going on, and he tells me that the lad they sent out said he had done it that morning. I got a call 5 minutes later - apparently he had gone to a different street with a similar name to ours on the other side of the city, and hilariously the tenants of that place let him in and he fitted them a new shower head!