Pinnacle Appliance Repairs Ignores my Call after Payment and Failed Repairs

Please, can this company be stopped from trading. Paid them R 5,850 on 23 April to fix my fridge, shortly after, another R 2400 as the fridge was not working and they indicated that the fault was due to something else. My fridge is still not working and they are ignoring my calls. They should be stopped as they continue to rob customers of their hard-earned money. I'm exploring consulting the consumer protection lawyer, however, this option will be lengthy and expensive but must be done.