None delivery to their promise to me

I change my plan on my medical aid more than one communication was send out to us, advising if y card still had the wrong details on they will post my card to the office address where I received the first card. To date I have never received the correct card I called and enquire why my card with the correct details was not send to me and it already April 2016 I changed my option in November why do we have to change in November and then the following year you still get the incorrect details printed on your medical card, this is very does not help me going to the doctor due to the incorrect details on my card I can not walk around with a peace op paper in y bag, being a women with paper in my bag imagine what the peace of paper looks like at the end of the week, so every time I go to the doctor I have to print the medical certificate that was given to me , I can not get to the post office do to my working hours, Saturday the post office close at 1 I only get home at 2, during the week I only get home at 5, my street delivery is not sufficient due to street kids that open my mail and scatter it in the street all my correspondence is via my e-mail address. I need my card asap don't make