I contacted them. As of now, they said that the record about this mail just appeared (4 months after I sent it) and they sent me a notice asking for more information. All this amount not been credited back yet.
They sent 1099-INT automatically, per my understanding they did it before they processed my mail few months ago.
I was with an IRS agent from the TAX law department for 30 minutes on the phone and we read both publications and he was unable to say am I received interest or not. He said that it should be determined myself.
