Safair - Never again

I flew Safair on the morning of the 9th of November from Lanseria to Cape Town. I'm a paraplegic. I got to the airport on time and booked in for the flight. I went to the gents and I thought my stomach might be not 100%. But as a paraplegic you never now. I went back to check in and ask them if I could take a later flight because I want to go home and check my stomach. They sent me to the the sales counter. There the lady told me, very arrogantly, that I have to pay for a new ticket or get a doctors certificate. No empathy. Nothing. I told her I will board the flight if that's the case and will face the consequenses if any. I've boarded the flight and all went well. But when I got off the plane, all hell broke loose. As soon as I got onto my own wheelchair, I started pooing. It was a nightmare. After this, I've decided that I will never fly Safair again. Their staff don't know anything about people with disabilities. Hope you can give your staff some guidance how to treat people with disabilities.