Lancet causes trauma to a patient

Good day, My domestic worker was sent for blood test by her GP regarding ****** stools. The blood tests done by Lancet diagnosed her INCORRECTLY as HIV positive!!! She went through extreme trauma for a week. She was send back for tests to Lancet 3 times during this period. She is a domestic worker and had to walk to and from the lab every time. At last she was informed that the HIV test came back negative. The GP send her for counselling. According to the doctor Lancet will “REFUND” all the costs to her medical aid. This is not a medical aid - it is medical insurance, so the refund will not benefit her at all. Lancet was also supposed to call her to apologize for this ********** mistake, but after months, she did not get any call op the sort. NOW!!!! She gets messages and calls to pay outstanding amounts to Lancet. I did send a mail to Lancet's client centre and demand that she gets a call to apologize and that this payment be waived. Did not get any reply back as yet. This kind of treatment of a person is UNACCEPTABLE.