I got a text for mothers day but didnt pay attention, thought it was from a "group text" because it was a number not in my contacts.  Then today I get a text with them saying Hi....using my first name.  I asked them who they were and they replied that I knew them but they didnt know how to tell me who they were.  I asked what did they mean.  They then replied "I'm sorry, I wont text you anymore."  I still dont know who they are.