I too receive calls from this number, but since I live overseas and mostly only have my phone switched on when I visit NZ, I have not suffered any Pay-as-you-go charges from this nuisance caller. Here are calls from the past year (I was surprised to discover that vodafone logs my incoming calls): 12 Aug 2019 12:28 PM 021 700 708 Call (to Vodafone mobile) 00:08 0.00 05 Aug 2019 09:32 AM 021 700 708 Call (to Vodafone mobile) 00:08 0.00 17 May 2019 12:56 PM 021 700 708 Call (to Vodafone mobile) 00:08 0.00 14 May 2019 03:28 PM 021 700 708 Call (to Vodafone mobile) 00:08 0.00 13 May 2019 03:46 PM 021 700 708 Call (to Vodafone mobile) 00:08 0.00 13 May 2019 03:46 PM 021 700 708 Call (to Vodafone mobile) 00:08 0.00 09 May 2019 11:41 AM 021 700 708 Call (to Vodafone mobile) 00:01 0.00 09 May 2019 10:11 AM 021 700 708 Call (to Vodafone mobile) 00:01 0.00 09 May 2019 10:11 AM 021 700 708 Call (to Vodafone mobile) 00:08 0.00 09 May 2019 10:11 AM 021 700 708 Call (to Vodafone mobile) 00:08 0.00

We Live in the UK as ex-pat Kiwis and have a Vodafone NZ for family contact. This is a persistent caller unsolicited and causes roaming charges if picked up.