Manipal Hospital — Harassment of 77+ CGHS member

I had admitted my father KC jauhari last friday 30th July with no advance payment as he is CGHS member.
6th Aug I got him discharged by paying full amount around 9pm.
Same night around 11pm I had to admit him in emergency as his sugar level got drastically dropped.

He was admitted in emergency and ones rtpcr was done Manipal billing team asked for 5000 which was 1 week before 10000 in advance.
I had not paid in advance when I had admitted him 1 week before.. Why there is inconsistency in the policy it's like you are in a market and you have to bargain
Is it a charitable hospital I doubt that
Told them that I will pay at the time of discharge as usual as he is on CGHS and aa per that no advance payment is supposed to be done however they denied admission. My father is still in emergency while I am writing this.

No consistency in the policy.
Anywhere in CGHS hospitals we have never paid in advance .