Unknown call repeated with no one on line.

I've been receiving calls from this phone number, and when I picked up the phone, there were no one there. If I don't pick up the calls, there will be another block number calls me right back in seconds and as always, there is no one on the other side.

Please help me to stop this problem. I get aleast 7 to 10 per day.

Thank you very much

I'm getting them too! They fill my voice mailbox and my clients can't leave a message. 972-543-0014 and 972-836-0193 are calling also.

Phone rang twice betweeen 3:24 and 3:30 am. Sounded like a fax coming through

this has been going on all day. Im from Pennsylvania and getting sick of this unknown calling,,  its becoming a habit lately..