Who takes responsibility?

Despite phoning on Tuesday at 10:21 am and emailing at 11:41 am and receiving an automated response, I never received a response with regards to what I am supposed to do, after being informed by my current Cardiologist, that the Pacemaker that Discovery Medical Aid Authorized to be fitted on the 29th of February 2024, by the Electrophysiologist Cardiologist. Since then, my health has declined, and nobody is being held accountable, and I am stuck with the wrong Pacemaker. I was admitted to the ER on Wednesday with a heart rate over 140 and medication didn't help, and they eventually had to use the defibrillator. This afternoon, my heart rate was over 110 again, so it looks like I am going to end up in the ER again. I understand that Discovery is just the enabler, but they have a role to play.