Help with my pip appeal

I had ongoing pip claim for enhanced daily living rates  from 2014 to 18 june 2017. In August 2016 i received a letter about a medical assessment in birmingham but still i live in wolverhampton and in atos report from 2014 i have difficulties on public transport especially in unfamiliar places and would need assistance i asked them for home apppointment which i was told was accept and dwp would send my files back to medical assessor so when i received two further letters in oct 2016 and nov 2016 i fone up Capita (as ive now moved back to my home town from sheffield where i had 1st appointment) both times of receiving letters and Capita told me they'll send files to dwp and they'll decide what happens next. I didnt heard nothing else from Capita or dwp again so at the  beginning of june 2017 when i didnt hear anything and i started to get worked about whats gonna happen when my claim ended in couple of weeks time i contacted dwp on 5th june 2017 and during that call i was shocked to be that the dates they had on their system about my end date was significantly longer then 18th june 2017 i was told so when i asked her for date she said she cant telle and someone would have to fone me back, couple of hours later on the 5th june 2017 i got call back and i was told my PIP benefit had been extended to 16 November 2022! I told her i hadnt received an entitlement to benefit so can i have letter sent out in post which she agree to do straight away. The next day i get another call from dwp stating the information i was gave by two different dwp advisors yesterday was wrong and im no longer entitled to pip because of an appointment i missed seven month previously, through i did ask for home appointment and i wasnt told i had been refused.. i believe dwp had done paper-base report when they couldn't facilitate home appointment for whatever reason and now theyve stopped my pip claim and my carer who cant help without cares allowance they were getting. if i didnt get in contact with them on 05 june i wouldve keep getting pip until 2022, if anything can give me abit of advice please about if theres anything i can do, i have been in touch with ICE in August 2017 but there saying they cant get back to me until December 2018 which i think is unreasonable timeframe to expect someone to wait, will it be something a tribuneral will look at aswell as this "missed appointment" or is there any other organisation that would be able to help me, ive got Aspergers depression and anxiety and ive not long moved out off supported accommodation to live independently and without my carer support not sure how much longer ill be able to cope for