JSA or ESA, either way I don't qualify!

In June 2015, I attended the Jobcentre to sign on (I've been claiming JSA). I suffer from hardening of the arteries in my legs, which makes walking difficult and tiring. The advisor I spoke to advised me that maybe I'd be better off going to my Doctor and getting a Med Cert to show that I was unfit for work and should claim ESA. Long story short, I got a 12 week Med Cert from Doctor and submitted to ESA, I was sent for health assessment where I was assessed as (surprise, surprise), fit for work. I went back to my Doctor, who gave me another Med Cert for 8 weeks which I submitted to ESA, who promptly stopped my benefits and advised me that I wouldn't receive any more benefits until I went for another health assessment. I went for 2nd health assessment, where, again, I was assessed as fit for work. I signed on again on the 17th of December 2015 and my JSA is to be continue from that date. I haven't been paid any benefits from anyone for the intervening period from the 30th of October to the 16th of December as JSA say I was not fit for work or was not actively seeking work and not entitled to JSA, The ESA are saying I was assessed as fit for work and not entitled to ESA, what can I do?