There is a microphone that attaches to a telephone handset via a suction cup. It plugs into an analog device (tape recorder or analog-to-digital input device attached to computer).

There are also low-priced pocket digital recorders available.


In Calif. it is illegal to record a conversation unless all parties agree to be recorded. Some states in the US allow recording when only one person agrees.

I think it is also the same over here in Australia.
Unauthorised recordings are not applicable in court over here AFAIK.

However in UkBob's case, where he is simply trying to get evidence to show to the same company to embarrass the company due to their lies, it is probably not a bad idea.