Hospital not paid (Neurologist motivation declined)

been submitted to hospital in April for 8 days, now discovery is saying for back pain they only pay up to 6 days, did submit the motivation letter from the Neurologist for why i was there for 8 days. phone in and the call center agent was not helpful at all, waited 20 minutes to be transfer to someone higher up then they drop the call, phoned again some different assisted and wasn't more helpful, transfer to the supervisor, also rude and bad client service, there after it was escalated to a relations manager, not listening to what i wanted to ask but said that they cant help. call transferred to different relations manager where by there was said i should take it up to a external company for finance reviewing, still not happy and asked to be escalated up, the clinical team leader said i should go with the appeal case. all because they don't pay more then 6 days for a back pain, 6 days per year. if anything happens now and i have to go back they don't cover it, so I'm on a big plan with 200% hospital cover but I now have to pay from my pocket for the hospital. really really disappointed with their client service, but they are real fast to take your money.....