I had an order for 20k shares at .87 that didn’t

I had an order for 20k shares at .87 that didn’t get filled even when the price fell to .83. So I called the bank to complain, and they filled it. But when I checked a little later the entire transaction had disappeared. You can still see the blip on Barchart. But it doesn’t seem to appear elsewhere. I’m on hold with the bank right now to see if I can find out what happened.