Looking for Spamhaus contact

Hi, Could somebody from Spamhaus contact me offlist? I've run in the case "[CIDR] conflicts with other PBL master records" where the whole range previously seems to have belonged to another ISP who has returned the range to RIPE. However they still have it listed in a PBL and it is not possible to contact them. As per Spamhaus FAQ "...contact Spamhaus directly to obtain control of those Master Ranges. There is a contact address in your PBL Account." The issue is that I do not see a Spamhaus contact address in our PBL account. And there doesn't seem to be any other conventional way to contact Spamhaus... Best regards, Hristo D.