The fuzzy white things are probably mealybugs if they look like white bits of cotton.
The difficulty with treating mealybugs is that there are always more to deal with than meets the eye. Young mealybugs lack the telltale cotton-like protective coating and they are skillful at hiding in nooks and crannies where leaves and stems join.
The key to successfully eradicating these creatures is to also spray the ones that are out of sight. That means that whatever treatment you select, you must get complete coverage, to the drip point, of all leaf and stem surfaces. If you miss a few, they will live to breed another day.