trade volumns

If one complains about broker's manipulation of the market the ASX repudiates it. I have just seen 20 continuous trades on the screen, the highest being three units. Only brokers can do this and in this case saw the sp fall from 9c to 7c. Am I the only one that can see this? Surely the ASX must be held accountable for this and not be allowed and not to tell retail investors to go 'piss in the wind'.