Why am I paying for hospital care??

Discovery has never surprised me with an unexpected reimbur*****t. Typically, I wait for them to pay a small amount after visiting a doctor. So when they deposited money at the end of February—around the time clients usually pay for services—I was surprised it went unnoticed among FNB alerts. Discovery gave no prior notice of the payment, and I didn't expect to be billed for in-hospital treatment. I assumed that hospital care included all necessary doctors.

Why would I expect a reimbur*****t from Discovery between February 25th and 28th? It doesn't make sense; the payment was just a fraction of the in-hospital care bill.