No longer wish to be Jewish?

Desperate help needed. A few years ago I converted to Orthodox Judaism when I married my wife. The local rabbi turned me away 3 times, but I kept going back because I thought that's what I wanted. I went through the process, going before the Beth Din and even being immersed in the ritual Mikveh. I have since done a lot of soul searching and have determined that this is not for me. I have made a lot of new friends at the synagogue, but I I accept Jesus as my savior, something incompatible with Judaism. My family is Christian and this is where my faith lies. My wife and I agreed to respect each other's faiths. I am now attempting to have the conversion nullified, but the rabbi is now conveniently claiming that there is nothing he can do. I even went back to the Beth Din and requested that they undo the conversion, and they won't. The synagogue won't do anything to help me. What can I do? If I go before the Beth Din and tell them I was insincere in the conversion, will they annul is then? I am considering legal action or possibly traveling to Israel is necessary. I know I can just stop practicing, that's obvious. My issue is that I do not want to be considered Jewish on paper.