phone calls from Sallie Mae

I started getting phone calls from Sallie Mae about 15 days ago. They bombarded me with calls at least 3 times a day. When I finally answered their calls, I requested them to stop calling me and take me off their list. I also told them that their calls were unsolicited. Then they started asking me if I was Merly. I told them I’m not the person they’re looking for. But they still keep on calling me. It pissed me off so after the first call I received from them today I called them back and spoke with different agents asking me ” are you” or “are you not”? This is so frustrating and I don’t know how to stop them! Please help me!