Summary doesn't make sense to me.
Is the submitter saying that even though they stopped processing disks on Saturday they are still within their defined window of 1-3 days processing?
If so, then what are you complaining about? They promised something and they are still delivering. Maybe they started with Saturday processing just to keep the service level and now the number of disks is not so overwhelming anymore that they are able to cut that day while still meeting their promise.