what to do with cigna health insurance company if they runing away from the claim i filed?

i was involved in car accident overseas i end up in hospital and cigna are running away from my claim although i give them all the paper works they need such is bills and doctor treatment its more than 3 month now and they keep tellin me excusies, i need some help i pay lot for my dector treatment do i need to file lawsuit against them
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healthquotes.awardspace.info - I switched to this health insurance from them, cause it gives much cheaper rates for m?.
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