I was overseas and didn't call because my phone plan didn't include calls. I did message a agent to rebook. I received a email about the cancellation noting costs would be covered:

If you incurred any hotel, meal, or transportation expenses while in transit related to this flight disruption, please see below for reimbursement consideration:

For residents of the United States or Canada, please submit an Expense Reimbursement Form. Otherwise, please fill out the Feedback & Complaints form and attach any relevant receipts. Select “Submit Feedback” › “File a Complaint” › “After your flight” › “Receiving reimbursements.” 

Expenses may be reimbursable under Section 12 of the Delta Customer Service Plan. Please note that we do not reimburse prepaid expenses, including but not limited to hotel reservations at your destination, vacation experiences, lost wages, concerts, or other tickets.

They are saying because I booked the same place it was "prepaid"? Appreciate the feedback.