Our shipping system is unexpectedly down. We received a DVD back from you and should have shipped you a DVD, but we likely have not. Our goal is to ship DVDs as soon as possible, and we will keep you posted on the status of your DVD shipments.
We are sorry for any inconvenience this has caused. If your DVD shipment is delayed, we will be issuing a credit to your account in the next few days. You don't need to do anything. The credit will be automatically applied to your next billing statement.
I received a DVD that was shipped Monday but that's the last one I've gotten. The said they expect to ship the next DVD to me on Friday."