I really can't tell this story to give enough credit to exactly how annoying it was... so you'll just have to imagine... and then make it at least two times worse than that.
We have a similar situation. In our bathroom. We've suffered in the semi-gloom for a long time, as two of our three sockets have the screwy-part remnants of cheap lightbulbs permanently (?) stuck in them.
And while the last lightbulb still shines, it flickers ominously. And it was from the same cheap, substandard lot as the other disintegrating lightbulbs.
With lightbulbs, as with most things, you get what you pay for.