Can you request a phone assessment instead of face to face?

I have received the dreaded WCA referral letter and will soon receive a UC50 form.  Although in the past I've had paper-based assessments at least twice, obviously there's no guarantee. 

My MH issues have made it impossible for me to navigate any journey alone and I don't have anyone who can come with me to a face to face assessment.  I do have a Carer who attends my home every day to do my cooking and help me dress, but she's not allowed to do anything aside from that and she's not allowed to attend benefits assessments with me (already asked).  I am not in a fit mental state to go anywhere by myself.  I have had to miss funerals, christenings and weddings due to my inability to go anywhere.

So what if DWP try to make me do an in-person face to face assessment?  Can I request a phone assessment instead?   My PIP assessment was done on the phone and was OK.  I would also be able to do a video assessment if these are offered.

All my psychotherapy, GP appointments and psychiatrist appointments are done either by video or by phone.  

Anyone know if I can ask for a phone assessment?