Complain to your broker, the ASX and your local pollie but they will just fob off the complaint.
I don't think there is a Retail investor lobby group? And lacking that, the only thing you can do is to make it a public issue - explain the issue to everyone you know. Tell everyone how useless the data is in the retail ASX data feed. The ASX wont change anything unless there is a public uproar and even then, reluctantly. No consultation from them, only decree and threats.