Caller: an annoying mobile number

here is the list of phone numbers that have called - these must be computerised calls.
Company called Latitude Financial Services is the name that most people get when they call back. They need to be stopped they are annoying and time wasting.
0478 542 772
0478 542 824
0478 542 782
0478 542 768
0478 542 804
0478 542 819
0478 542 799
0478 542 810
0478 542 770
0478 542 821

these numbers keep ringing us and then no one is there when i answer - we are a business and these calls are a nuisance

I called back the number 0478 542 799 but the phone just kept ringing