Max Hospital — Non cooperation from hospital

Address:

Max Superspeciality Hospital, Vaishali

The patient(my mother) got discharged on 24/12/2021 at around 6.30 pm in the evening. On enquiry with the insurer I found out that the bills for medical consumables amounting to 21, 483 was sent by hospital to the insurer late and hence it got approved few minutes after the discharge.
I paid 21, 483 in cash(10, 000 on 18 December during admission and remaining during discharge on 24 December 2021).
On the next day after discharge, I called the TPA desk to ask for the refund since the whole bill had been approved by the insurer, but they said refund won't be given for the cash paid by us amounting to 21, 843.
Please look into the matter and issue the refund ASAP.

The insurer(Care Health Insurance) had approved the complete bill of 2, 48, 810 and we have also paid 21, 483 for the consumables which is already receivable to the hospital from Care health insurance.
So for the non payables amounting to 21, 843 the hospital should be refunding the cash collected from us.
Max ID of patient is MAX.403853.

Please help us in getting the refund as we are already suffering