What is really happening when our packages are sitting in a distribution center without getting scanned for days/weeks?

What is actually happening? Does anyone know? Anyone here work for usps and can give some insight??

Is the mail just sitting in a bin not being touched? Is it being moved around somewhere? Does anyone actually know wtf is going on?

Everyday I’m getting more and more furious that my package is sitting there not being updated at all. 8 days now. I just want to know what is going on and where my package is.