A ticked-off Boston City Council voted to issue a “rare” subpoena to compel testimony from the local postmaster at next month’s hearing on late mail concerns after the U.S. Postal Service blew off the body’s request to appear at the last one.

In an internal email accidentally sent to the City Council, a USPS executive apparently accused the body of having a political agenda and not caring about residents receiving their mail. The post The Boston City Council held an emergency hearing on late mail delivery.

Boston city councilors slammed post office leaders on Tuesday for refusing to testify at an emergency hearing on mail delivery delays after complaints from residents across the city about inconsistent and unreliable postal service.

The City Council slammed the U.S. Postal Service for blowing off an emergency hearing aimed at addressing service failures it says are causing residents to miss out on bills and prescriptions, and raising mail-in voting concerns.