So i place a buy order at exactly the ASK (for les

So i place a buy order at exactly the ASK (for less than the amount of shares on the ask. The order just sits there then they jack the ask up .02 cents, i move mine up .01 cent, fills like. 100 of 4000 shares?? Then jumps the ask by like .04 cents. I pull the order then the ask drops right back wher it started. I also notice even if I’m above the ask the order might just sit there, these cant all be All or nothing asks. Lots of bullchit going on with the trading but that could be the broker just seem someone is always trying to play every situation.