If payments or refunds are not made pursuant to the provisions of NRS 286.673, 286.674, 286.676, 286.67675 or 286.6768, the dependent parent of a deceased member is entitled to receive a cumulative benefit of at least $400 per month, and if there are two dependent parents, each is entitled to receive a cumulative benefit of at least $400 per month. Payments to any parent pursuant to this section must cease upon the death of that parent.