They probably are not pollinated. Perhaps bees or other pollinators are not common in your area. You can try identifying male and female flowers, and then pollinating them by hand.
Callas make seeds, but it might take you two years before you can turn them into flowers. You must wait till the seeds are perfectly ripe, dried in the pod,...
Open the Activity Monitor, which is a built-in application in your Mac. This will show you everything that's running. It may be that there's something going on in the background...
Avoid much use of fertilizers enriched high amounts of phosphorus. Instead, use fertilizers enriched with potassium, which will increase the rate of fruition.
Apply high phosphorus fertilizer, such as 5-10-5, to promote fruit. Hand pollinate with a cotton swab or paintbrush to increase chances of fertilization.
You should bake your bread as close to the serving day as possible. If you're pressed for time, you can make it 2 days in advance, but make sure you...