Think it's one to take on the chin, and not use that company again.
We're having a long e-mail conversation at present. I threatened to send an invoice for a morning's work – £100 – and use Small Claims to recover it. That really started them thinking, but they don't know that I won't do it. Seems like I'm moving up the heirachy at their end.
Realistically I won't get anywhere, but their service is poor, and I'm giving them a bit of a run around which I'll settle for.
Postie here is good, and will deliver to next door if I leave a note (Don't tell RM though!)