This morning we've been getting a barrage of prerecorded automated phone calls - like one every 5 minutes. 

Is there any way to block these? We're on Vodafone Broadband and Home Phone.
I know how to block calls from a cellphone, but not sure how to do it on a wireless landline.
I see there is a blacklist I can see from my account page, but it only blocks TXTs

Thanks.