It's possible that at some point in your trading life a problem, misunderstanding or disagreement will occur. If so, you can often resolve such problems by:

• Acting quickly
  Immediately discuss any problem with your firm. As days pass, losses can mount, recollections can fade and information can be lost.
• Talking to your brokerage firm
  When you have a question about your account or a trade, first ask your account representative or your firm's compliance officer what happened and why. Give the firm an opportunity to look into the matter and clear it up for you, or fix a mistake if one has been made. Most differences can be resolved in this way. You can find a list of CME Group’s clearing firms in the CME Group Clearing Firm Directory
• Participating in a dispute resolution program at CME Group, the National Futures Association (NFA) or the Commodity Futures Trading Commission (CFTC)
  Contact one of these entities if you can't resolve your situation with or through your firm or you believe your problem is the result of a violation of CME, CBOT, NYMEX/COMEX, NFA or CFTC rules or regulations.