And why only a few months of bills?

While we are at it, why only “15 months” or “6 months” of bills?

Come on, is disc (and backup) so expensive they can’t keep the tiny bit of ASCII text or numbers in a DB for a few years? The CSV is only 5KB, and the PDF if I ask for that is 177KB. It probably cost them more to get the code written and run to delete the old data than it would cost them to keep it.