I hope everything goes well for you in that case . It's a shame that we have to fight our way through it like this.
Good luck with it , I'm not sure what stage youre at right now ? Mandatory reconsideration or appeal ?? If its MR and they don't change the decision then you can get the letters from GP etc .You can also send your MP an email and he/she will be on their back.
Don't give up though because that's exactly what they want

Antonio