Please help

Hi everyone,
Iv been on pip for about 6 years now.
Have severe mental health issues (all diagnosed) I’m under the mental health team.
4 years ago I had a operation that went horribly wrong leaving me with severe ptsd, pain, incontinence, pain and a addiction to painkillers.
I am under a drugs programme and in recovery.
My husband is my carer and is in charge of all medication, cooking, washing me etc
I sent in hundreds of evidence and Iv always had paper assessments due to my mental health.
I have been told I have to have a telephone assessment this time and it’s literally making me feel suicidal.
I have never done this before and I’m scared.
I was hoping someone could help me prepare for my call please because I’m honestly worried I won’t make it to the call, it’s made my mental health that bad.
Please no judgement I’m so fragile but just need some help please