Unpaid claim

I was admitted in hospital in July and discharged on 1st Aug. I have a hospitalisation cover with Hollard Insurance. I then logged a claim with Hollard on the 7th Aug and to date I have not received any response from them. I have followed up my claim with their call centre on the number *** and every time the call centre agents tell me that the claim is still being processed and someone will call be back with feedback either on the same day or the next day. It has been over two months now and I am still waiting. This is ridiculous and completely unacceptable. when you sign with them they promise to settle within 15 days. I cannot wait any longer