nondeliveries

/ˌnɑndɪˈlɪvəriz/
noun
  1. Instances in which something that was supposed to be delivered (such as mail, packages, or services) was not delivered.
    • She filed a complaint after experiencing repeated nondeliveries of her online orders.
    • The postal service reported several nondeliveries due to the snowstorm.
    • Our company tracks nondeliveries to improve shipping accuracy.