Lost & Found Lost and Found Lost an item at the DECC? We’ll help you find it. Please contact the DECC/AMSOIL Arena Box Office at 218-722-5573 or by email at receptionist@decc.org. Ticket Office Hours: Monday-Friday, 10am-5pm The Ticket Office is located in the AMSOIL Arena ticket lobby. From the main parking lot, enter at Door E.