anyone can file a complaint against their broker with both the sec and finra
not sure if i'm following this correctly
but if one has a full service brokerage firm and said firm has issues getting bids filled for JBII .. that firm can also file a complaint with the sec and finra (forms on respective websites)
i know for a fact these broker filed complaints (against a MM) are *handled* differently than just your avg joe/jane *retail* doing the same (by the sec at least)
my interaction with finra is slightly different than it is with the sec