Missed call from dwp and text asking me to call back

Hi, I'm absolutely panicking, I had a missed call from dwp and then a follow up text

"We tried to call you about your Personal Independence Payment claim but couldn't contact you. Please call us on 0800 121 4433 between 9am to 4pm by today."

I'm rubbish on the phone and stutter and can't get mh words out, and have auditory processing issues, and everything pip have had someone with me. My support worker is off sick today. But I have to ring up by today.

For context, I'm at the waiting for a decision stage.

Does anyone have any idea why they have called me, so i can prep myself, as I'm absolutely panicking and feel like I'm going to be sick.

Thanks