Getting an RADB entry removed that was added by a previous peer

It appears that Reliance Globalcom (AS6157) added an RADB entry for our prefix (129.77.0.0/16) when we were a peer of theirs years ago, and it was never removed when we ended the relationship. We are ASN 14607. I've reached out to their support, but does anyone have a suggestion on how I could get this cleaned up if they don't respond?