Are they trying to rent a house while stealing from people?

In the summer, we wanted to rent a house in Oran. We posted an ad on Marketplace. I agreed to rent it for a period. She gave me a number and told me to talk to her brother. He told me to send the money, saying he would handle the house and no one else would give it to me. I sent the money on the first night, and the day I started calling him to remind him, he and his sister hung up the phone.