You can block unwanted calls free. There should be something under your phone settings to block calls by entering the number. On my phone it's under initial seeings, call block. On some phones it shows as call reject. So glad I figured it out. Keeps these recurring calls fro happening.
keeps calling, mostly on weekends at inconvenient times, never leaves a message, any legitimate company/person would leave a message so I am blocking and suggest you do too....