I Have Medicare And Need A Supplement Insurance. I Had

I have medicare and need a supplement insurance. I had breast cancer and it was in the very beginning stages. I had radiation and my dr. said I am absolutely fine. I checked with an insurance co. and because I have a pre-existing condition they charge more and said that not too many companys will accept me.
I thought that a pre-existing condition was not a problem anymore and was changed in 2014. I don't want Humana at all and not an option. My doctors are great and I love them and don't want to change anything.