I have to agree Putney.

Any "company" that would be granted authority to handle an Estate would have the necessary legal power to get a response from ebay if it was appropriate for ebay to reply.

It sounds to me more like a fight between family members over the administration of an Estate.

I don't know about Victoria, but here in NSW if an Executor cannot discharge his duties the Public Trustee takes over...and they would not be appealing for help from ebay members.