Who called from 4070123698

Unknown just shows unavailable with the number on the caller id; blocking and filed a complaint with the ftc

This number called us 3 times within the past 1 1/2 hrs.

This caller called twice within 15 minutes

Called back using *67 4070123698 - "The number you have reached is not valid"  They were calling my FAX number many times today generating a Fax Log printout which wastes my ink and paper, Grrrrrrrrrr! They are now blocked.

three more calls from them every hour, makes 6 calls today so far...anyone else know who they might be?????  continued blocked, filed more complaints with the ftc