My English

Today I spoke with my house owner. If my father were at home I did not need speak with owner. But today my father was not at home so I spoke him. But I could not understand all what he said to me. I often speak on the telephone with owner. Whatever he calls me, I feel very sad. Because of my English!! Every day I am thinking about my English, but I have a no idea. How to study ENGLISH. My English got better than before?? I do not think so. I have a no idea what do I have to do. HELP ME!!!!!!!!!!!!!