If no Decision on your claim is made before the End Date of your current then the DWP should extend that award by another year to allow the assessment process to complete.
This won't be done until 30 days before the current End Date so I'm afraid there is no immediate solution to this situation.
Ring as early in the morning as you can, the lines open at 8 am.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems