Code of Practice - Website Transfers

Hi - is anyone aware of (or would anyone like to propose!) a Code of Practice amongst agencies when it comes to complying with client requests to transfer site hosting?

On the few occasions I have been asked to do this by clients my experience has generally been one of exemplary professionalism - agencies will usually provide ftp access, transfer domain details etc as they have little to gain by doing otherwise.

However clients can be frustrated when agencies don't co-operate in this way. I recently dealt with a case where an agency refused ftp access on grounds of security and insisted on charging a day of time to 'package and test' a 10 page site with a tiny database. Is this sort of behaviour ethical?

Thanks

Iain