Can I get back BNB sent to contract address

I mistakeanly sent BNB to the BSC contract address 0xf4De1f6169C5a1189c0664f838BB44F293cf8cf3. The token owners say they cannot recover the funds. Can someone please take a look at the contract and see if the BNB can be recovered? Thank you.

As long as the contract doesn't have to withdraw function, you cannot get back your BNB from the contract anyway. I just took a look at the contract functions. There is no withdrawal function in the contract. Instead, there is a BEP20 token withdrawal function.

function recoverBEP20(address token address, uint256 token amount) public onlyowner {
        // do not allow recovering self token
        require(tokenAddress != address(this), "Self withdraw");
        IERC20(tokenAddress).transfer(owner(), tokenAmount);
    }

As you can see from the code, only the owner can call this function. If you can kindly ask the owner, you may find a way to get back the BNB or equivalent their tokens.

Thank you.