By Sophie Watson & Zahna Eklund A mum has been hailed a ‘genius’ after sharing her doorbell hack which means she never has to shout for her kids to come downstairs again. If you’ve got kids, you’ll know that wrangling them all together for dinner isn’t always the easiest task. When they’re upstairs in their bedrooms and you’re in the kitchen, it often involves shouting through the house to let them know it’s time to come downstairs, and if they’re listening to music or watching TV, there’s a chance they won’t hear you – meaning you only get more and more frustrated as your shouting gets louder…