BEWARE!!!! Authorisation number given but a week later revoke leaving patient with huge bill

I was at Midvaal hospital and discovery gave the authorisation number therefore with that knowledge I allowed myself to get admitted. I would have appreciated it if they didn't give the authorisation i would have left the hospital and not be left with huge bills, Discovery revokes it a week later after i already incurred the cost.

They happily take your premiums and then do such a thing its not fair to the hospital and to the patient. Be honest discovery if you cant authorise it say so and Ill accept it. Now I am left with the bills. Please people don't use Discovery I myself and my whole family and company employees who use discovery are seeking medical aid elsewhere where patients are not treated like this. Beware everyone you will get an authorisation number but they will refuse to pay all claims and only tell you once the procedures and expenses have been incurred. Unacceptable for a company to behave so faulty!!!