We have da'as that G-d does not listen to chote''im (sinners), but if anyone has chassidus and yirat shomayim and does the ratzon (will) of Him, this one G-d hears. [TEHILLIM 18:23-32; 34:15 16; 66:18; 145:19-20; 51:7(5); MISHLE 15:8,29; YESHAYAH 1:15; 59:1-2]