Refusing to help

Extremely disappointed with Makro service. I bought a laptop in December and now my charger stopped working. I went into a store to test my charger and laptop. My laptop works 100%, there is absolutely nothing wrong with it. All the problems is with the charger. They refuse to replace the charger (that they have in store) and they want to send my entire laptop to Johannesburg for 3 weeks to replace my charger. They don't need my laptop for anything, as there is nothing wrong with it, all I need is a new charger, and they are refusing to give it to me