Mohela moved me to the standard plan before the 90 day deadline

I got my 90 day email on July 28th meaning I should have until October 28th to switch a new repayment plan. Today I got an email saying I've been automatically placed on the standard repayment plan with 800 dollar payments which I can't afford. I checked my account and it indeed says I'm on standard repayment. I keep being left on hold with Mohela I thought we had 90 days from when we got the email or is this administration continuing to screw everyone over? Basically my option is to ruin my credit or be homeless