Hey Littlebabyc,
Bitcoin Cash (BCH) and Bitcoin Core (BTC) are both irreversible payment systems by design. So unfortunately there is no way to reverse a sent transaction, or for you to recover the BCH from your end.
Bitcoin Cash (BCH) can usually be recovered from a Bitcoin Core (BTC) address, but this can only be done from the "_Receivers_" end.
If you have sent BCH to their BTC address, then you will need to ask the Leolist.com support to recover the BCH funds for you. If they do not know how to recover BCH from their BTC address, they will need to contact the support team of their wallet provider.
You can provide them with this link, which is proof of your transactions:
https://explorer.bitcoin.com/bch/addres ... yCyYggAWdf
Best of luck, hopefully they can help you get your (BCH) back.