Called me too on my mobile and calls several times a day. Same hang up situation. I called it back and it said to press 1 to be removed from the call list. I hope that by pressing 1, It didn't give permission to charge my bill anything! Researching that now. Please post if you know anything.
I have been getting the calls from this number since last few days. However, today I have called them and pressed 1 so that I do not get calls again from this number. Hope they will not disturb me again.
UGH.. All you did was verify they have a live number.. ROT, don't recognize the number, don't answer and definitely do not push any numbers to so call remove yourself..