Lack of accountability

Bonitas debited my bank account on the 2nd Jan as they were supposed to. They then returned the amount and of course I did not get this notification. I was alerted by my optometrist yesterday when she said it shows that I am suspended on my medical aid. I contacted Bonitas and they told me the debit order bounced. I called my back and they told me the debit order went off successfully, but the money was returned by Bonitas for reasons only known to them.

This is an inconvenience. I no longer have these funds in my bank account, as according to my knowledge before yesterday, I was meant to have funds on my medical aid as it is the beginning of the year and my debit order successfully went off.

I am sick, I need to get to hospital but unable to do so as Bonitas decided so. What is going to happen now?