who is roundup funding

As far as I know, Roundup Funding LLC is a debt collector. There are chances that any of your original creditors have sold off your debt account to them. Now that you've filed bankruptcy, they cannot reject it but they can appeal to the court to lift the automatic stay. It will be court's discretion whether or not it will reject or accept the claim of the debt collector. You need to speak to your bankruptcy attorney in this regard and he will guide you as to what steps you need to take in this matter.