Rude staff members.

Metropolitan funeral plan people call me everyday and asking for the same person I told them that I do not know. Then today a guy called my number I explained to him again that I don't know the person they looking for, it's a wrong number and that they should remove my number from their database. 1 hour late a lady this time calls me, when I explained that I do not know the person and that some guy called me an hour ago and I asked him to remove my number from their database she became very rude. She didn't even want to hear me until the end and she hanged up the phone while I was still talking... This is not the first time and this is really frustrating. Can this number stop calling me ***