Escalation after escalation

My dependent did an MRI scan at Wilgeheuwel hospital on the 17 Feb. The MRI departement got authorisation from Discovery. I had to pay the upfront payment of R3850 as per my Classic Smart plan. The rest was not paid to the MRI department by Discovery and my query has now been "escalated" twice and each time im told it will take another 3 to 5 days to sort out the mess. The MRI department call me every day looking for their money. I now have 2 reference numbers *** and ***. Please could someone sort this claim out asap as my plan do cover MRI scans with a co payment.