Who called from 6612370844

Called multiple  times daily never leave a message. This has been going on for several months. Don't  answer because don't  recognize  number.

Number kept calling and I refuse to answer. After the 4th call in an hour, I called back and was given two options; 1 to speak to a customer representative and 2 to register my number on the do not call registry. We'll see if that actually worked.