The price can be whatever we decide, even if the account is already paid, we can still ask for more

My daughter has been in Vaalpark hospital, and we had to do a few blood tests daily to see how her health progressed. Every 2nd day I walked over to the path care center next to the hospital, to do payments. Every time they had to phone to Capetown to have the account code be changed to a "cash account" to qualify for discount. On the very last day I walked over twice to make sure that all payments are up to date. They did assure me that everything was paid in full, but will only be allocated towards each bill once Cape Town makes the invoices... Today Cape Town office phoned to say I owe them money (all added to almost R 2,000 ..., which I rep**** that they now openly want to ***** me through the ears....