Unfortunately the OTCBB is a listing service for Market Maker bids & offers (not a stock exchange). They are bound only to the size order as listed and that is between BB participants. It is also technically a telephone call in for a trade although most MM's are linked through various electronic systems to speed up the trading. Often I will get an instant fill, only because in my case Schwab has internal orders on the books that they are filling.
You can complain, you might get some adjustment BUT the best thing to do is use a better broker. Schwab or Fidelity will get you much better executions in my opinion.
Check this out from the SEC:
No SEC regulations require a trade to be executed within a set period of time. But if firms advertise their speed of execution, they must not exaggerate or fail to tell investors about the possibility of significant delays.
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