I have one too, also given to me some years ago.(I soon realised why!).Right now it's full and hasn't been turned since last summer. Whenever I have a big, strong male visitor the bin gets a few vigorous turns (how men like to show their strength! ), but due to covid - no visitors, so it just sits there.
I hope to get it emptied next month but am not sure when the contents will get riddled. I can no longer do much in my garden. I'm still waiting for treatment on my poor arthritic right thumb which is held in a splint to prevent painful movements so I am, quite literally, handicapped
.
One thing is sure though - the bin goes on Freecycle once it is empty!
I've been lucky enough to find a retired chappie who keeps my small garden tidy on an hourly basis. He will empty, and hopefully, riddle my dalek next week (expensive compost! ).
Tricia