Trouble of Bicycle

Unfortunately, I have been having some troubles in my bicycle since I started to live in Madison. First, I got a used bicycle just after coming to Madison. Its pedal got broken when I used it about a week. Then, I paid tens of dollars for repairing. Just next day, the bicycle was stolen when I parked it at the Union South. I was so depressed. But I bought new one next week. However, the new bicycle was initially defective and the brake doesn’t work. I will go to the shop this weekend and ask for preparation of the brake. In this way, as far as the bicycles, I have had a bad luck in Madison. I would like to pay enough attention for bicycle that no more troubles happen.