Megabus don't want to pay me money for hearing loss that their transport caused

I Mokhukhu Benjamin ogotseng have a Problem with Megabus, I started worked at Megabus from 2012 September 07, they've sent us to medical every year I was fit to work but in 2018 08 14 Dr E M Rabaloi sent me to Kimberly to Dr Werner Hoek ( Ear, nose throat specialist) so this Dr diagnosis that I have a lost hearing, and after that I continued to Work and in 2019 02 20 I get the certificate that I am unfit to work, and they say it's because I worked the mines, they makes excuses about the mines, so I was fired and I didn't even receive a rand for my hearing loss, so I want you to help me to get the money for my disability. I tried to go to Labour every time when I go there, the person who works my case is not there, pls help me.