No; the banks will not tell you whom to talk to.
If they are not ready to LIST the house; heaven and earth could not move them.
When they are ready, they want to LIST the house with a Realtor of their choice:
They also require that the Buyer be represented:
Early on; they had too many deals fall out of Escrow, for one reason or another, and that is very expensive for them. And that is not even considering the potential for lawsuits.
Often, there is a long wait, from the Trustee Sale (Foreclosure) to the LISTING.
That is just the way it is.