Please Help

I am nearly 70 years old and on disability pension since 2002. I have a Discovery Classic Comprehensive plan that costs me R10 444 per month – it is one of Discovery’s best plans [?]. On Monday 12 August, my daughter (I was ill in bed) had to take my wife to Mediclinic, Welkom because she had severe pains in her neck and upper body – she struggled to breathe. The doctor in trauma tried to relief her pain from 10:00 until 15:00 but couldn’t. She was admitted to a ward and was on a drip for pain relief, which didn’t help at all. An orthopaedic surgeon then took over and placed her on a course of Steroids IV for pain relief. This didn’t relief her pain either. X-rays and an MRI scan showed severe neck problems and the orthopaedic surgeon decided to operate. My wife was operated on, on Tuesday 20 August and was released from Mediclinic, Welkom on Saturday 24 August. The hospital costs were paid by Discovery except for R 4 342.95 for 20 August, stating a code 133 ‘violation’ by someone [?]. I have talked to Discovery and Mediclinic (who are threatening me now) numerous times. After speaking to Frans van Niekerk – manager Mediclinic, Welkom – he promised me that he will investigate it (Monday 28 October) and that he will come back to me, but he never did! My question now is what exactly is a code 133? How could it have been prevented? Why did it happen? And if it was some ‘violation’ who is responsible and why do I now sit with this unexpected cost from nowhere? Am I responsible for something I didn’t know anything about?