If you are getting notices, likely it has already been posted.
Sounds like you have taken appropriate actions/precautions at this point.

I don't want to recommend strategy to you over the internet, but sounds like you are on the right track.

If you're not getting return phone calls, then expect the worst. You may want to contact the bank on the return address to let them know you are in possession of the the home and would like to make your rent payments directly to them if in deed they get possession of the home. If you have a deposit with the owner, chances are it is now gone, so you want to keep that in mind when negotiating with the lender.

It may be beneficial to the lender to continue to lease from you through the end of your term and give you a bonus to leave the house in good condition at the end of the lease.

I am very sorry for the situation and hope you can resolve it to your satisfaction, although it may cause you to move.

Just by the reaction of not calling you,l you should assume he is still in foreclosure. you may want to hold the rent until he replys to you, but make sure you do put it aside because if he pays up and gets out of foreclosure, you want to make sure you have the rent. most private landlords do not belong to the credit reporting bureau as it costs money to join and report to them good luck with working things out.

The owner is probebly ashamed to speak with you regarding this matter or anyone else for this matter. But it's not an excuse for you not to pay the rent. Try to get in touch with your landlord. I would also reccomend to contact a real estate attorney for advise.