To be honest it doesn't surprise me having seen what some think is acceptable - there was a story recently where a delivery drive left an elderly person lying on her door step, didn't even ring for an ambulance, or neighbours door bell, just walked off and left her there, and it was freezing cold.
Good job you were not down the side, with the front door being the only means of access, you could have been locked out etc, its appalling and just being lazy, and very inconsiderate, it would have taken a few seconds to ring the bell.
I've been around my mother in laws this morning, she is having her bathroom turned in to a wet room show, this is being paid for by a grant, it's costing the tax payer circa £9000, and the workmanship is absolutely appalling, no water proofing, just standard plasterboard, the tiling is appalling, most DIYer's would do better. For £9k I'd expect it all done properly with gold plated taps!