Received multiple text messages for my address (as I was selling an item on-line). Requested a full name from them. Received the name "Daniel". I asked them for the last name, they ignored my request. I asked them to stop contacting me. They proceeded to repeatedly sent question mark symbols, as well as "what is wrong with you" inquiries. I blocked their messages. They proceeded to call me by phone. I blocked the number. They immediately tried to call using an Unknown caller ID.