As a pax on the 330 I have stood in the galley at doors 2 on several occasions. It is colder than a polar bears bum. Usually I wear shoes, on one occasion just those socky things provided - it was freezing on the floor. The cabin sit there rugged up with blankets and hot water bottles. It is not someone's imagination at work here, it is friggen cold.
The only way to attack the issue is via OHS. The company doesn't have any concern for any staff members welfare unless it costs them money. An unfortunate legacy of Geoff.