Jobcentre not responding to requests

Hi,
My wife and I had to apply for Universal Credit in September because of a change in our circumstances. My wife ceased being a carer for our son and therefore we had to claim UC.

Previously, we had been receiving Income Support with disability premium and PiP. The PiP and disability premium were for me as I take fits and am on enhanced mobility component.

When we claimed, the process was relatively easy and the jobcentre worker said she would "switch off" job search and job related activities for me, given my disabilities. My wife would have to continue submitting "fit notes" as she has COPD. All seemed smooth enough until we received notification of the amount we were to be paid.

We were not given any allowances for my limited ability to work or limited ability to carry out work related activity. So I put a note in my UC journal asking them to look again at the payments we were gettng as I thought there should have been an allowance for the above circumstances.
I heard nothing - no reply, no letter - nothing. After a week, I rang the UC telephone number (which, I have learned is a company called RYSCAR and not even the DWP). The first time I rang, the operative seemed puzzled that I had not received a response and said he would email the Jobcentre to respond urgently. He said if I had not heard from them within 24 hours I should ring back.
I waited two days and rang RYSCAR back and a different operative told me that I can't "prompt" the DWP to look at my case but that I have to continue sending in "fit notes" until the job coach decides whether or not to send me for a "fitness for work assessment". She stressed three times that I cannot "prompt" the Jobcentre to speed it up.

Is that true? Surely not. I don't remember moving in time and space back to Soviet Russia and thought that all government agency decisions have a right to be reconsidered and/or appealed.

My wife even put a note, quoting me, on her UC journal asking if her job coach could help whilst at the same time putting her "fit note" in to them. All she got was a thankyou for the fit note with no reference to the other query she had.

Is there any other recourse I can take to get my case looked at again? They are just behaving as though I don't exist.