I had booked a trip last April and then decided to use my DVC instead. It took about a week, week and a half before I was refunded.
But if you are worried give them a call back and ask if they have sent the credit out to your bank yet. If they haven’t ask when you can expect it to go out.
Hope everything works out okay, and I’m sorry you had to cxl your trip. Hope your planning another one soon!