The podcast was being made by a company called Antenna, but all my correspondence was with the gallery. They have said they will claim expenses from Antenna, but to date .... no fee, no expenses.
And this in connection with a show that is sold out.
This is just one small incident in the broader picture of exploitation of artists, curators, writers, speakers and administrators. This occurs as a matter of habit even in connection with events that involve large budgets to cover substantial fees for other professionals, such as designers, publicists and the deliverers of other services.