Tribunal phone call from DWP

Hi, This is a bit of a strange situation so bare with me.

I put in an online tribunal request after my paper one got lost in the post, This was after huge misleading statements were made about my ability to work during the medical assessment. Despite this, during the mandatory reconsideration, They kept to their decision to close my claim and make me sign up to JSA.

So, I fill out the tribunal, send the documents online (fortunately i had a backup copy of all the documents i sent) and a few weeks later I get a single ring on my phone from the DWP 0800 number and a text saying "We need to talk to you about your ESA claim, please call us straightaway on...".

I call the number and after 45 mins i get through to an advisor who looks at my call history, she says "Yeah, so, you need to close your JSA claim and get your doctor to send us a sick note for the time since your claim stopped". No real help, that's all she kept repeating. I'm guessing she spoke to a decision maker and was just repeating her notes.

I'm worried that if i close my JSA claim, i'll be forced into universal credit and it will mess everything up, i'm also concerned that this is happening before action from the tribunal service. I've tried looking through the forum and couldn't find any examples of this happening, if anyone could suggest how i should proceed, i'll be very grateful.