No contact person (account manager) to assist at Agoda

I've recently purchased a property which is listed on Agoda's site. I am still getting reservations through Agoda, even though the property is now being operated through a different entity (which has no agreement with Agoda). There are no contact details for business owners requiring assistance with these types of matters (I also don't have a username and password, as the account was created by a previous owner). I'm going to turn away guests who book through Agoda in future and hope that they will complain directly (maybe this will result in the property being de-listed).