Who called from 2814493640

fax line calls constanly. No way to figure out who owns the number.
Very anoying

UNknown FAX number

rings my cell with a repeating tone about every hour. Can't call back to stop this harrassment. Seems like fax tones.

repeated called - seems like they or someone is trying to send a fax.  5-7 calls on my work business line.

Just got a call to my mobile in the UK from this number - who is this guy?? I just tried calling it back (which was probably exactly what they wanted me to do so that they could reverse charge me somehow) and got the reply "This number is not in use or has been discontinued". Also got a call to my landline a few seconds before but there no number was left.