Help for cancer

I was told I have stage 1B Melanoma skin cancer. After completing what is needed from the doctors I was told that my surgery (which is the last step) will cost $7,000 . While I was at pre op they said if I don’t pay there is no surgery. My wife and have been struggling and I prayed about it about have no options left. I hate asking for help and I hate asking but with my oncologist and the other doctors saying if I don’t get it done they are %90-100 positive that the cancer will spread.