Bad service

I had a complete black out in a mall taken to hospital by an ambulance test been run and eventually got stent in heart their policy say it must he more serevere tjen previous with no exlantion that another stent not covered it say must be more servere how do you determine such mean that if you had a stent and next day discharged and then this event indicate unstable angina with a major stent in ramus artery and 4 days in icu then received approved and suddenly get a call say its declines there no clear indication what serverity mean is its a very bad experience from discovery and i even move all my clients fron them