Owning your own home

Just not being decent enough to give me a heads up after a year.

But what difference would that have made in practice?

If you forgot to invoice someone for work, you'd call first and say hey I'm going to get that invoice to you finally.

But they haven't forgotten to invoice you for work they did for you. They asked you to pay for the repairs which they've now got round to doing which you said you'd pay for. I think the analogy is flawed. If you forget to invoice someone for your work, that's your fault because you could have sent the invoice earlier but didn't. They couldn't have asked you to pay for the works earlier, because they hadn't got them done. It doesn't seem reasonable for you to complain that they've taken too long to do the work, and while it might have been polite to let you know the works were going ahead I really can't see what difference that would made. After all, what were you ever going to say in response other than 'Yeah, OK then'?