Dangerous electrical fault by sub-contractor

We had lodged a claim for hor an electrical problem. Discovery Insure sent out an electrician working for Jacko Electric to resolve it. The claim was marked as completed but the problem is even more severe now as only the plugs trip when the earth leakage trips and the rest of the switches wired to the Earth Leakage still work even with the earth leakage having tripped. This can cause a life-threatening fire I gave contacted Jono multiple times asking him to come back and fix the problem but he has stopped taking my calls and not answering me on WhatsApp