Zoom didn't record my last meeting and I've been told I've run out of recording capacity

A message from Zoom told me I need to increase my storage capacity for recordings. I do not know how to do this but when I try to phone Zoom for help, its bot says it has no record of my account (although I do have one). A Zoom meeting on Sunday night should have been recorded but I see no sign that it was. (It's not in my list of recordings.) An advisory email from Zoom simply told me to read everything it has ever published. I don't find that helpful. Can someone give some tailored advice, please.