How do I fix this?

5°C, heavy non-stop rain.

Repair: my phone line is often very poor, the crackle & hiss is so loud that I can’t hear what people are saying and it often cuts off my ADSL internet connection. Okay, but it costs £99 to get a British Telecom engineer out and they may decide that it’s an internal fault and not do any repair.

So, now on a very wet Sunday afternoon, I could replace the internet wiring run from the BT box. It’s an intermittent fault, and what do you know- it’s clear right now.