I am sorry you are going through this, FannyCornforth.
It is late now, as time I was in bed, but I couldn’t just pass by.
Yes, if you report a change in your condition it will trigger a review, even if it is not due. Actually many reviews have been put on hold, but by reporting, they will review. A telephone assessment is normal these days.
Sadly at CAB we see so many decisions based on an assessor’s report which blatantly contradicts what a claimant has said. It is all too common.
There are two things you can do.
1. Make a written complaint to the assessment company. It wont change the decision though.
2. Request a Mandatory Reconsideration, within one month of the date of the decision. This is a necessary formality, and may not change the decision, but you need to do this. Do not merely point out where there are lies or errors. Show how you meet the descriptors and where you should score points, with plenty of recent examples of what has happened when you attempted to do eg cooking, dressing, walking, etc. plus any recent medical evidence, scans, reports.
If the decision is unchanged , you can appeal. Do so within one month. Once lodged, you can get more evidence, as it will take several months to get a date for a hearing at a Tribunal. You will be treated fairly, impartially, and kindly. See my thread about Tribunals.
Look at threads where there are links to official advice. And keep trying to get hold of CAB, or Welfare Benefits if your local authority has one. CAB mainly relies on trained volunteers to answer the phones and there are not enough, but persevere. And people like me who are advisors sometimes get ill or have partners in hospital and have to take a break.
I will watch this thread and try to help further when I get time.