Who called from 7097575716

Called me 3 times too this month,  i answer and no one speaks,  the line just goes dead.

Called back and said it In service and reverse caller ID comes up and says number don't exist... They called my mother about 10 times this weekend and she had 3-4 calls today, when she answers they don't speak, seems like there is nobody there...she was getting tired of it today and said after no response when answering the phone, she said would you please stop calling here and a woman on the line said ok and hung up... Wth!

Called my number several times randomly, have not answered.