The following shall be the only acceptable forms of payment of a fine, penalty, cost, or other charge imposed under this chapter or the Act:
A payment in the form of cash shall not be accepted by mail.
A respondent's submission of a personal check, company check, certified check, cashier's check, postal money order, or bank money order that is returned due to insufficient funds or for any other reason, shall constitute a failure to pay and a failure to respond properly to an NOI, second NOI, or decision.
D.C. Mun. Regs. tit. 16, r. 16-3116