Kalyani Hospital - Overcharged by Hospital and fake treatment for no actual illness to claim Mediclaim

My father (aged **) a senior citizen who served at the Govt. Office was admitted to Kalyani Hospital, MG Road, Gurgaon last night due to dizziness. Post prelimiary investigation (ECG abd Blood), it was understood that it was because of high BP. The hospital purposefully admitted him overnight and instead of releasing him the next day, they continued to keep him in the cath ICu without any major medication to complete the basic billing requirment to claim Mediclaim benefits. On continued requests of release and agreeing to the pay the bill in cash, they made a whooping bill of **.*k INR and asked us to pay in full for less than ** hours hospitalization in a common Cath Lab.
The bill amount were ridiculous and inapt to the kind of services they r offering and hence raising this formal complaint against the hospital to address my issue.