Advertise products online that's not in stock and keep customers money during a pandemic

On the 24th of April I bought a laptop online. When I called to ask when they will deliver they rep**** they can't as laptops are not essential items. That night the government made it essential and I called back the next day. The agent told me she can't tell me if I will get a laptop or my money back I have to wait and see. I needed a laptop urgent for online school. The next day I called again and another person told me the item is out of stock and I should take a refund. I then went to a game store and bought a laptop worth R5500 and groceries to the amount of R7000. I now need my refund and I got no reply. I also made a complain on Facebook. They asked me for the order number but since then didn't respond to the message. During this pandemic as a single mom I need my money. This company sees it right to take your money and advertise products they don't have. Since the 24th of April I've been waiting. I will never support them again and I'll make sure I tell everyone I know.