Pregnant with a heart condition

I'm 21 weeks pregnant with Mitral Valve prolapse. I got referred from South Rand after an ECG was done. When I get to jhb gen at 7 on the 5th of June 2019 no one assists use until 8 am which is ridiculous since they say working hours start from 7 am. The staff was just sitting there having nice conversation with each other. So im told to leave my letter of referal and call back the next week on Tuesday between 2pm-3pm and ask for promise and Maligana on ********** . I call on Tuesday on 11/06/2019 I can't get through I also ask my mom to try she has the same problem. I google the cardiology departments number which is ********** I call I get through to someone and she says she will go to the department and check asks for my name and number and surprise , surprise no one gets back to me . Then the number can't go through, I try a couple of times till it just rings with no one answering the phone. This is terrible I'm pregnant and not feeling well worried I might have a heart attack or stroke. This is very scary the thought of dying with my baby inside me. The people who do admin at the department of Cardiology are so ***********. Disgusting service