Recourse for Robinhood erasing my transaction (and profits)

So on Friday I purchased 95 shares of UPST at the same exact time it flash dipped to the all day low of 99.75. Wow what luck right ?! When I went to sell my shares for my 500 or so profit today it canceled my shares and erased all history of purchased. I flipped and called robinhood and was told this:

“Thank you again for your patience as I had this reviewed. Here's a bit more background on what occurred, your buy limit order for 95 shares of UPST on 3/25/22 was voided because it executed out of range. Please note it was the vendor, not Robinhood that cancelled and voided the order. “

I know I shouldn’t be using robinhood in the first place and I learned my lesson. I’m moving brokers. How can I report them , do I have a case ? They should be responsible for an order they executed.