UHC overbilling

when i called UHC because they did not list the price for next year, the supervisor me next year would be 191.50 ans i was currently paying 97.50. after the call i remembered that is not what i am paying. UHC is billing me 165.40. i canned a support supervisor again and he agreed i should be paying 97.50 and attempted to contact billing on my behalf. However there was a technical issue reaching billing. after logging into the medicare page it confirmed i should be paying 97.50. after reaching someone in billing they told me that the 165.40 was the correct amount i tried to get them to look further but they insisted i call Medicare. After calling medicare they could not understand why UHC would have me call medicare. Medicare after hearing the billing issue wanted to open and investigation. I am now awaiting their investigation.. With the price nearly doubling i decided to look at other options.It appears i and get similar coverage from Humana for about 50% less then UHC for close to the same coverage..