Residents in a single-family home development in Silver Spring, Maryland, say they couldn’t count on mail carriers to deliver their mail.

“Mail delivery is an uncertainty every day,” resident Nevin Martell said.

Sometimes they would receive nothing at all. Other times they’d receive their neighbors’ mail or expected deliveries would go missing altogether.

“My dad took some beautiful pictures and sent them just in a first-class envelope, and they never arrived,” Martell said.

Read more: Maryland Neighborhood Unable to Rely on Mail Delivery