Poor service - Discovery Insure

Absolutely pathetic service from Discovery Insure - Incident happened on the 24/11/2018. Shortly to be 3 months later and there is still no finality on the outstanding issues. Discovery used a contractor to replace our garage doors. The contractor sub contracted to another company, who installed the doors so badly that there were a number of defects on the installed doors. When all companies opened again in January we finally got a response and were advised that 1 of the doors would be REPLACED because of the defects. The sub contractor came last week and REPAIRED the door. No sign of the contractor throughout. I emailed Discovery on the 3/2/2019 another list of defects as the repaired door looks even worse after the shoddy workmanship. The consultant Keith Bonda referred it to the contractor. I then asked Keith to contact me telephonically urgently. To date I have received no response from Keith or his team leader. When the door was supposed to be REPLACED why was it REPAIRED????? Nobody responds to queries raised and I am the client. Tshegofatso Msiza is the team leader in charge - no response from him either. I am paying a high premium for the insurance and yet the service level received is so poor. Why cant another contractor or sub contractor be used? The ones currently appointed on Discovery's panel are useless. The contractor doesn't return messages or keep you informed - how is he even on your panel??? Who must I refer this query to???????? When will the matter be sorted out??????