How do I close my Bilt Mastercard®? May 16, 2022 22:39 Updated Please contact customer service by calling the number on the back of your card. Related articles Can I revolve my rent on my card? Can I go into debt on rent? Can I transfer a balance to my Bilt Mastercard®? Can I change or cancel my order? Can I add authorized users to my Bilt Mastercard®? Will I pay a fee on my rent payment if I use the Bilt Mastercard®?