A few days ago, I received an email confirming that my holiday to Greece in July had been cancelled. It's an easyJet package holiday.
I still had roughly £1000 of the balance left to pay, due tomorrow. Obviously I haven't paid this as the holiday was cancelled.
This morning I've received an email telling me to pay the balance. This would be an automated thing, right? Surely not part of the rules in order to receive a refund?! 
Thanks.