Who called from 7812982820

No message. Keeps calling.

Annoying calls every night around the same time. No one responds when the call is answered.

Many calls every day. Unknown. Do not answer.

This number constantly calls me,  answered once to find out who it is (just says Canton, Mass on my caller ID) and it was some survey organization and I told them to stop annoying me... they still call, so I called them back tonight (nice and late on the East Coast) and a little old lady answered. Not sure if they duped the number, so I did not feel comfortable telling her to eff off.

Same issue - no messages and calls at the same time every night