Worst Online assistance in South Africa

Worst customer service I've ever had from this store. Bought a Gas Heater + Cylinder from them online, gas cylinder is faulty. Called and spoke to Louisa (Online Consultant), then Wynand (Gas Cylinder Consultant) who confirmed I'm not the only with this type of complaint, then Jessica Switchboard. All either promise to call you back they sorting out the issue but never do. I'm still stuck with a non working product with no one to talk to. My last option is to drive from Joburg to Pretoria to face them and spend more money on trasport fees just to solve this matter.