Started calling several days ago. They either hang up when I answer or they don't say anything at all. Must be some type of cell number because it accepts text messages. Texted them & told them to either state their business or quit playing on my phone. I normally don't answer calls I don't recognize but they appear to be a medical supplier and I was looking for a new one. However these people don't seem to be legit & appear to be playing games. Blocked & reported.