Who called from 2055442131

Someone keeps calling me asking for Betty. I told them no one lives here by that name. They continue to call everyday 2x a day.

Wife just received a call and answered this number, no one would respond.  A few minutes later they called back and she let the answering machine take it.  They said, "This is for Arthur Sampling, reference case number XXXXXXXXXXXX, consider this official notification." Then they hung up.